ci: change key to always update cache

Author: frank-w

.github/workflows/build.yml

@@ -74,7 +74,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ~/.cache/ccache/
-          key: ${{ runner.os }}-ccache-${{ github.ref_name }}
+          key: ${{ runner.os }}-ccache-${{ github.ref_name }}-${{ github.run_id }}
           restore-keys: |
             ${{ runner.os }}-ccache-${{ github.ref_name }}