workflows: bump codecov/codecov-action from 3 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3...v4)

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

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

.github/workflows/go.yml

@@ -86,7 +86,7 @@ jobs:
  run: go test -race -v ./... -coverprofile=coverage.out -covermode=atomic
 
  - name: Codecov
- uses: codecov/codecov-action@v3
+ uses: codecov/codecov-action@v4
  with:
  token: ${{secrets.CODECOV_TOKEN}}
  file: ./coverage.out