Bump codecov/codecov-action from 1 to 4 (#12)

* Bump codecov/codecov-action from 1 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 1 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v1...v4)

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

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

* Add token for Codecov

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alessandro Lai <alessandro.lai85@gmail.com>

Author: dependabot[bot]

.github/workflows/tests.yaml

@@ -56,7 +56,8 @@ jobs:
       - name: Run tests
         run: vendor/bin/phpunit --coverage-clover=coverage.xml
       - name: Upload code coverage
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v4
         with:
           file: './coverage.xml'
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}