TO-DROP: ci: test more patch levels of the MSYS2 runtime

These correspond to the individual Git for Windows patches left out of
the `git-for-windows-pathconv-adjustments` branch of
https://github.com/dscho/Cygwin-msys2-fork.

The hope is that I can figure out where that `xargs: environment is too
large for exec` problem comes from (or put better: how the Git for
Windows fork of the MSYS2 runtime does _not_ seem to run into it).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

.github/workflows/main.yml

@@ -26,26 +26,32 @@ jobs:
       fail-fast: false
       matrix:
         n:
-        - nr: 1
-          run: 7072653564
-        - nr: 2
-          run: 7072653731
-        - nr: 3
-          run: 7072653988
-        - nr: 4
-          run: 7072654240
-        - nr: 5
-          run: 7072654509
-        - nr: 6
-          run: 7072654736
-        - nr: 7
-          run: 7072654943
-        - nr: 8
-          run: 7072654990
-        - nr: 9
-          run: 7072655045
-        - nr: 10
-          run: 7072655115
+        - nr: "-1"
+          run: 7238908981
+        - nr: "-2"
+          run: 7238908983
+        - nr: "-3"
+          run: 7238908982
+        - nr: "-4"
+          run: 7238908980
+        - nr: "-5"
+          run: 7238908995
+        - nr: "-6"
+          run: 7238908994
+        - nr: "-7"
+          run: 7238908992
+        - nr: "-8"
+          run: 7238908993
+        - nr: "-9"
+          run: 7238908997
+        - nr: "-10"
+          run: 7238908998
+        - nr: "-11"
+          run: 7238908999
+        - nr: "-12"
+          run: 7238908986
+        - nr: "-13"
+          run: 7238908991
     concurrency:
       group: windows-test-${{ matrix.n.nr }}-${{ github.ref }}
     steps: