Update codecov/codecov-action action to v7

Author: renovate[bot]

.github/workflows/codecov.yml

@@ -51,6 +51,6 @@ jobs:
         run: vendor/bin/phpunit --colors=always --coverage-clover clover.xml
 
       - name: Send code coverage report to Codecov.io
-        uses: codecov/codecov-action@v6
+        uses: codecov/codecov-action@v7
         with:
           token: ${{ secrets.CODECOV_TOKEN }}