ci(workflows): update docker image registry to use organization namespace

- Change image registry from repository-based path to organization namespace
- Update ghcr.io image reference from `ghcr.io/${{ github.repository }}` to `ghcr.io/kodermax`
- Simplifies image naming and aligns with organization publishing standards

Author: kodermax

.github/workflows/publish-image.yml

@@ -34,7 +34,7 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ghcr.io/${{ github.repository }}
+          images: ghcr.io/kodermax
           tags: |
             type=ref,event=branch
             type=semver,pattern={{version}}