Update codecov/codecov-action action to v4

Author: renovate[bot]

.github/workflows/codecov.yml

@@ -21,7 +21,7 @@ jobs:
             maven-
       - run: |
           mvn clean install -DskipITs
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: ./target/site/jacoco/jacoco.xml