Bump codecov/codecov-action from 3.1.4 to 4.0.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.4 to 4.0.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3.1.4...v4.0.1)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build.yml

@@ -117,7 +117,7 @@ jobs:
     - name: Unit tests
       run: ./mvnw test # making it temporarily verbose.
     - name: Codecov
-      uses: codecov/codecov-action@v3.1.4
+      uses: codecov/codecov-action@v4.0.1
     - name: Install jars
       run: ./mvnw install -q -B -DskipTests
     - name: Integration tests using spring boot version ${{ matrix.spring-boot-version }}