[BUG] CI: Tests fail because coverage cannot be submitted

[niccokunzmann]

Describe the bug

It seems that the coverage is not generated and cannot be submitted.

To Reproduce

https://github.com/collective/icalendar/actions/runs/11148662159/job/30986481187

Run tox -e nopytz
nopytz: install_deps> python -I -m pip install coverage hypothesis pytest
.pkg: install_requires> python -I -m pip install hatch-vcs hatchling
.pkg: _optional_hooks> python /opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyproject_api/_backend.py True hatchling.build
.pkg: get_requires_for_build_sdist> python /opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyproject_api/_backend.py True hatchling.build
.pkg: get_requires_for_build_editable> python /opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyproject_api/_backend.py True hatchling.build
.pkg: install_requires_for_build_editable> python -I -m pip install 'editables~=0.3'
.pkg: freeze> python -m pip freeze --all
.pkg: editables==0.5,hatch-vcs==0.4.0,hatchling==1.25.0,packaging==24.1,pathspec==0.12.1,pip==24.2,pluggy==1.5.0,setuptools==75.1.0,setuptools-scm==8.1.0,tomli==2.0.2,trove-classifiers==2024.9.12,typing_extensions==4.12.2,wheel==0.44.0
.pkg: build_sdist> python /opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyproject_api/_backend.py True hatchling.build
nopytz: install_package_deps> python -I -m pip install 'backports.zoneinfo; python_version < "3.9"' python-dateutil tzdata
nopytz: install_package> python -I -m pip install --force-reinstall --no-deps /home/runner/work/icalendar/icalendar/.tox/.tmp/package/1/icalendar-0.1.dev1.tar.gz
nopytz: freeze> python -m pip freeze --all
nopytz: attrs==24.2.0,backports.zoneinfo==0.2.1,coverage==7.6.1,exceptiongroup==1.2.2,hypothesis==6.112.2,icalendar @ file:///home/runner/work/icalendar/icalendar/.tox/.tmp/package/1/icalendar-0.1.dev1.tar.gz#sha256=98cdaaa1b4792c44ffecbe7962e3275fe4c3454a0a6a18c2ee14f8480ae8f1dc,iniconfig==2.0.0,packaging==24.1,pip==24.2,pluggy==1.5.0,pytest==8.3.3,python-dateutil==2.9.0.post0,setuptools==75.1.0,six==1.16.0,sortedcontainers==2.4.0,tomli==2.0.2,tzdata==2024.2,wheel==0.44.0
nopytz: commands[0]> coverage run --branch --source=src/icalendar '--omit=*/tests/hypothesis/*' '--omit=*/tests/fuzzed/*' --module pytest
============================= test session starts ==============================
platform linux -- Python 3.8.18, pytest-8.3.3, pluggy-1.5.0
cachedir: .tox/nopytz/.pytest_cache
rootdir: /home/runner/work/icalendar/icalendar
configfile: pyproject.toml
testpaths: src/icalendar/tests
plugins: hypothesis-6.112.2
collected 1667 items

src/icalendar/tests/fuzzed/test_fuzzed_calendars.py s                    [  0%]
src/icalendar/tests/prop/test_identity_and_equality.py ................. [  1%]
........................................................................ [  5%]
.........................                                                [  6%]
src/icalendar/tests/prop/test_property_values.py .                       [  6%]
src/icalendar/tests/prop/test_unit.py ................                   [  7%]
src/icalendar/tests/prop/test_vBinary.py ......                          [  8%]
src/icalendar/tests/prop/test_vBoolean.py ....                           [  8%]
src/icalendar/tests/prop/test_vCalAddress.py ....                        [  8%]
src/icalendar/tests/prop/test_vDDDTypes.py ......                        [  9%]
src/icalendar/tests/prop/test_vDatetime.py .......                       [  9%]
src/icalendar/tests/prop/test_vPeriod.py ..........                      [ 10%]
src/icalendar/tests/prop/test_windows_to_olson_mapping.py .............. [ 10%]
........................................................................ [ 15%]
.....................                                                    [ 16%]
src/icalendar/tests/test_bom_calendar.py .                               [ 16%]
src/icalendar/tests/test_rfc_7529.py                                                                23      5      6      0    76%
src/icalendar/tests/test_time.py                                                                    18      0      0      0   100%
src/icalendar/tests/test_timezoned.py                                                              136     27      8      0    78%
src/icalendar/tests/test_unit_cal.py                                                               184      2     10      0    99%
src/icalendar/tests/test_unit_caselessdict.py                                                       47      0      0      0   100%
src/icalendar/tests/test_unit_parser_tools.py                                                       17      0      0      0   100%
src/icalendar/tests/test_unit_tools.py                                                              23      0      0      0   100%
src/icalendar/tests/test_with_doctest.py                                                            42      3     12      3    89%
src/icalendar/timezone/__init__.py                                                                   7      2      0      0    71%
src/icalendar/timezone/provider.py                                                                  25      0      0      0   100%
src/icalendar/timezone/pytz.py                                                                      37     35      4      0     5%
src/icalendar/timezone/tzp.py                                                                       66      7     12      2    88%
src/icalendar/timezone/windows_to_olson.py                                                           1      0      0      0   100%
src/icalendar/timezone/zoneinfo.py                                                                  75      2     12      0    95%
src/icalendar/tools.py                                                                              19      0      2      0   100%
src/icalendar/version.py                                                                             6      3      0      0    50%
----------------------------------------------------------------------------------------------------------------------------------
TOTAL                                                                                             3267    235    602     34    91%
nopytz: commands[2]> coverage html
Wrote HTML report to htmlcov/index.html
nopytz: commands[3]> coverage xml
Wrote XML report to coverage.xml
.pkg: _exit> python /opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyproject_api/_backend.py True hatchling.build
  nopytz: OK (25.04=setup[9.59]+cmd[12.60,0.64,1.48,0.74] seconds)
  congratulations :) (25.61 seconds)
1s
Run coverallsapp/github-action@v2
Run mkdir -p ~/bin/
sha256sum: release/coveralls-linux.tar.gz: No such file or directory
release/coveralls-linux.tar.gz: FAILED open or read
sha256sum: WARNING: 1 listed file could not be read
Error: Process completed with exit code 1.

Expected behavior

I would like coverage files to be

1. generated
2. uploaded

Environment

• OS: GitHUb CI Ubuntu
• Python version: 3.8
• icalendar version: main

Additional context