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>

.github/workflows/push.yml

@@ -40,7 +40,7 @@ jobs:
         run: hatch run test
 
       - name: Publish test coverage
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v4
 
   fmt:
     runs-on: ubuntu-latest