Vendored _staggered.py causes problems on Python 3.10

[KrystianOcado]

Describe the bug
_staggered.py uses new Python syntax except* that was added in Python 3.11: https://docs.python.org/3.11/whatsnew/3.11.html#whatsnew311-pep654. It causes problem when you try to deploy Google Cloud function using Python 3.10 even tough aiohappyeyeballs says it is compatible with Python 3.10 (it happens because GCF tries to compile all the code).

Error:

ERROR: (gcloud.functions.deploy) OperationError: code=3, message=Build failed: *** Error compiling './aiohappyeyeballs/_staggered.py'...
  File "./aiohappyeyeballs/_staggered.py", line 98
    except* _Done:
          ^

To Reproduce
Try to compile _staggered.py using Python 3.10

Additional context
I believe this won't cause runtime problems because of how it is imported in staggered.py: https://github.com/aio-libs/aiohappyeyeballs/blob/main/src/aiohappyeyeballs/staggered.py but it causes build problems because of how GCP functions work.

[mtelka]

I do see the same issue when I try to install the wheel using /usr/bin/python3.9 -m installer aiohappyeyeballs-2.4.2-py3-none-any.whl.

[tsibley]

FWIW, I've also recently run into this issue when using PyOxidizer, as it pre-compiles Python modules during its bundling step.