build(deps): Bump codecov/codecov-action from 5.1.1 to 5.1.2

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.1.1 to 5.1.2.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5.1.1...v5.1.2)

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

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

.github/workflows/tests.yml

@@ -84,7 +84,7 @@ jobs:
         if: env.GIT_DIFF
         run: |
           EXPERIMENTAL=true make test-unit-cover
-      - uses: codecov/[email protected].1
+      - uses: codecov/[email protected].2
         if: env.GIT_DIFF
         with:
           token: ${{ secrets.CODECOV_TOKEN }}