Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/sonarcloud.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           java-version: 21
           distribution: 'temurin' # Alternative distribution options are available.
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
       - name: Cache SonarCloud packages