Bump codecov/codecov-action from 2 to 3 (#136)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 2 to 3.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v2...v3)

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

Signed-off-by: dependabot[bot] <support@github.com>

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

.github/workflows/run-tests.yml

@@ -66,6 +66,6 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: ${{ github.event_name != 'pull_request_target' }}
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v3
         with:
           env_vars: PYTHON_VERSION