Update coverage.yml

Author: ramsafin

.github/workflows/coverage.yml

@@ -39,15 +39,15 @@ jobs:
         uses: actions/cache@v3
         with:
           path: $CACHE_DIR
-          key: ${{ runner.os }}-ccache-${{ matrix.compiler }}-${{ matrix.build_type }}-${{ hashFiles('CMakeLists.txt') }}
+          key: ${{ runner.os }}-ccache-${{ hashFiles('.github/workflows/coverage.yml') }}
           restore-keys: |
             ${{ runner.os }}-ccache-
 
       - name: Cache build directory
         uses: actions/cache@v3
         with:
           path: build/
-          key: ${{ runner.os }}-build-${{ matrix.compiler }}-${{ matrix.build_type }}-${{ github.sha }}
+          key: ${{ runner.os }}-build--${{ hashFiles('.github/workflows/coverage.yml') }}-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-build-