Update actions/cache action to v5

Author: renovate[bot]

.github/workflows/run-tests.yml

@@ -23,7 +23,7 @@ jobs:
           coverage: none
 
       - name: Cache dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.composer/cache/files
           key: qa-${{ hashFiles('composer.json') }}-${{ matrix.php }}-${{ hashFiles('.github/workflows/run-tests.yml') }}