Bump codecov/codecov-action from 4.3.1 to 4.4.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4.3.1 to 4.4.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v4.3.1...v4.4.0)

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

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

.github/workflows/cov.yml

@@ -30,7 +30,7 @@ jobs:
         go tool cover -func coverage3.out
         rm coverage2.out
         rm coverage.out
-    - uses: codecov/codecov-action@v4.3.1
+    - uses: codecov/codecov-action@v4.4.0
       with:
         token: ${{ secrets.CODECOV }}