Bump codecov/codecov-action from 3.1.4 to 4.0.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.4 to 4.0.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3.1.4...v4.0.0)

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

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -22,4 +22,4 @@ jobs:
       - name: Test
         run: make test-cov
       - name: Coverage
-        uses: codecov/codecov-action@v3.1.4
+        uses: codecov/codecov-action@v4.0.0