macos-11 -> macos-latest

Author: Kantis

.github/workflows/ci.yaml

@@ -89,7 +89,7 @@ jobs:
       # The other targets are tested individually above.
       strategy:
          matrix:
-            os: [ ubuntu-latest, macos-11, windows-latest ]
+            os: [ ubuntu-latest, macos-latest, windows-latest ]
       uses: ./.github/workflows/gradle_task.yml
       with:
          runs-on: ${{ matrix.os }}