chore(deps): bump the codecov group with 1 update

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


Updates `codecov/codecov-action` from 3 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@v3...v4)

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

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

.github/workflows/php-cs-stan-unit.yml

@@ -164,7 +164,7 @@ jobs:
           filename: 'clover.xml'
 
       - name: 'Export coverage results'
-        uses: 'codecov/codecov-action@v3'
+        uses: 'codecov/codecov-action@v4'
         with:
           files: './clover.xml'
           env_vars: PHP_VERSION

.github/workflows/php-unit.yml

@@ -102,7 +102,7 @@ jobs:
           filename: 'clover.xml'
 
       - name: 'Export coverage results'
-        uses: 'codecov/codecov-action@v3'
+        uses: 'codecov/codecov-action@v4'
         with:
           files: './clover.xml'
           env_vars: PHP_VERSION