chore: bump codecov/codecov-action from 3.1.1 to 3.1.2 (#1123)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@d9f34f8...40a12dc)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/cover.yaml

@@ -20,6 +20,6 @@ jobs:
       - name: Unit test
         run: make unit-test
       # pinning to the sha f32b3a3741e1053eb607407145bc9619351dc93b from https://github.com/codecov/codecov-action/releases/tag/v2.1.0
-      - uses: codecov/codecov-action@d9f34f8cd5cb3b3eb79b3e4b5dae3a16df499a70
+      - uses: codecov/codecov-action@40a12dcee2df644d47232dde008099a3e9e4f865
         with:
           files: ./coverage.txt