ci: Make Docker Hub description update non-blocking

- Add continue-on-error: true to Docker Hub description step
- Add timeout-minutes: 5 to prevent hanging
- Docker Hub API timeouts won't block the build
- Docker images are already built and pushed successfully

The description update is cosmetic - if it fails due to transient
Docker Hub API issues, it won't prevent the build from completing.

Author: neverinfamous

.github/workflows/docker-build-dockerhub.yml

@@ -201,6 +201,8 @@ jobs:
       - name: Update Docker Hub Description
         if: github.event_name == 'push'
         uses: peter-evans/dockerhub-description@v5
+        continue-on-error: true
+        timeout-minutes: 5
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}