Bump codecov/codecov-action from 3.1.5 to 4.3.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.5 to 4.3.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3.1.5...v4.3.1)

---
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/ci.yaml

@@ -134,7 +134,7 @@ jobs:
       - name: Upload coverage on success
         # v4 breaks tokenless uploads
         # v3.1.5 is a specific version for node20. v3.1.6 returned to node16.
-        uses: codecov/codecov-action@v3.1.5
+        uses: codecov/codecov-action@v4.3.1
         if: ${{ success() }}
 
   docs: