CI: use bash style variable expansion for the mingw cache key

It doesn't understand the powershell syntax which leads to the cache
key being empty which leads to cache restore being skipped
which leads to slow builds not using ccache.

See https://gitlab.com/gitlab-org/gitlab-runner/-/issues/2747

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8a80b60435b35627ee66e561cd6d8becf152c83d..b228e9c6570f185382edb56e3f9d0d312e391609 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -104,7 +104,7 @@ release-build:
     - C:\msys64\usr\bin\pacman --noconfirm -Syyuu
     - C:\msys64\usr\bin\bash -lc "bash -x ./.gitlab-ci/test-msys2.sh"
   cache:
-    key: "${env:CI_JOB_NAME}"
+    key: "$CI_JOB_NAME"
     <<: *cache-paths
 
 msys2-mingw32: