build(deps): bump codecov/codecov-action in the github-actions group

Bumps the github-actions group with 1 update: [codecov/codecov-action](https://github.com/codecov/codecov-action).


Updates `codecov/codecov-action` from 6 to 7
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v6...v7)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/code-coverage.yaml

@@ -30,7 +30,7 @@ jobs:
         run: mvn install -P jacoco --batch-mode -Dmaven.test.redirectTestOutputToFile -Dmatsim.preferLocalDtds=true
 
       - name: Push code coverage to CodeCov
-        uses: codecov/codecov-action@v6
+        uses: codecov/codecov-action@v7
         with:
           files: ./matsim/target/site/jacoco/jacoco.xml,contribs/*/target/site/jacoco/jacoco.xml
           token: ${{ secrets.CODECOV_TOKEN }}