.github: 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@5ecb98a...6d79887)

---
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/tests.yml

@@ -48,4 +48,4 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: ${{ matrix.update-coverage }}
-        uses: codecov/codecov-action@5ecb98a3c6b747ed38dc09f787459979aebb39be # v4.3.1
+        uses: codecov/codecov-action@6d798873df2b1b8e5846dba6fb86631229fbcb17 # v4.4.0