Bump codecov/codecov-action from 3.1.5 to 4.3.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.5 to 4.3.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@4fe8c5f...8450866)

---
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>

.github/workflows/go.yml

@@ -46,4 +46,4 @@ jobs:
       run: make cover
 
     - name: Upload coverage to codecov.io
-      uses: codecov/codecov-action@4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0 # v3.1.5
+      uses: codecov/codecov-action@84508663e988701840491b86de86b666e8a86bed # v4.3.0