Bump codecov/codecov-action from 5 to 6 (#80)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5 to 6.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5...v6)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/docker-publish.yml

@@ -29,7 +29,7 @@ jobs:
       run: ./gradlew build
     - name: Test
       run: ./gradlew test
-    - uses: codecov/codecov-action@v5
+    - uses: codecov/codecov-action@v6
     - name: Build image
       run: ./gradlew bootBuildImage --imageName=$IMAGE_NAME
   push: