Bump codecov/codecov-action from 5.4.0 to 5.4.3 (#80)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.4.0 to 5.4.3.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@0565863...18283e0)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: 5.4.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/checks.yaml

@@ -36,7 +36,7 @@ jobs:
         run: go test -race -cover -coverprofile=coverage.out -covermode=atomic
 
       - name: Codecov
-        uses: codecov/codecov-action@0565863a31f2c772f9f0395002a31e3f06189574 # v5.4.0
+        uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}