ci: another GitHub action updated

Author: mpusz

.github/workflows/ci-test-package-cmake.yml

@@ -87,7 +87,7 @@ jobs:
     steps:
       - name: Downcase 'build_type'
         id: build_type
-        uses: ASzc/change-string-case-action@v6
+        uses: ASzc/change-string-case-action@v8
         with:
           string: ${{ matrix.build_type }}
       - uses: actions/checkout@v5