chore(deps): Bump codecov/codecov-action from 2 to 3 (#277)

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/master/CHANGELOG.md)
- [Commits](codecov/codecov-action@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>

Author: dependabot[bot]

.github/workflows/testing.yml

@@ -88,7 +88,7 @@ jobs:
       - uses: actions/download-artifact@v2
         with:
           name: coverage-xml
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v3
         with:
           file: ./coverage.xml
           fail_ci_if_error: true