chore: bump codecov/codecov-action from 5.3.1 to 5.4.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.3.1 to 5.4.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@13ce06b...0565863)

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

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

.github/workflows/on-demand-workflows.yaml

@@ -64,7 +64,7 @@ jobs:
       - run: npm ci
       - run: npm run test:unit
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@13ce06bfc6bbe3ecf90edbbf1bc32fe5978ca1d3 # v5.3.1
+        uses: codecov/codecov-action@0565863a31f2c772f9f0395002a31e3f06189574 # v5.4.0
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_ORG_TOKEN }}