chore(deps): update actions/cache action to v5

Author: renovate[bot]

.github/workflows/pull-request-kotlin.yml

@@ -86,7 +86,7 @@ jobs:
           java-version: ${{ inputs.java-version }}
           cache: 'gradle'
       - name: Cache SonarCloud packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         if: ${{ !inputs.skip-sonar }}
         with:
           path: ~/.sonar/cache

.github/workflows/sonar-cloud.yml

@@ -65,7 +65,7 @@ jobs:
           java-version: ${{ inputs.java-version }}
           cache: 'gradle'
       - name: Cache SonarCloud packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.sonar/cache
           key: ${{ runner.os }}-sonar