Update actions/cache action to v5

Author: renovate[bot]

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
       - name: make gradle wrapper executable
         run: chmod +x ./gradlew
       - name: cache gradle
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.gradle/caches