Lock the setup-msys2 action to v2.4.2
setup-msys2 v2.5.0 broke Python for yet unclear reasons, avoid it until
that's resolved.
See also
@@ -351,7 +351,7 @@ jobs:
run:
shell: msys2 {0}
steps:
- - uses: msys2/setup-msys2@v2
+ - uses: msys2/setup-msys2@v2.4.2
with:
msystem: MINGW64
update: true
