fix username for karim's registry

Author: hansthienpondt

.github/workflows/dev-nightlies.yml

@@ -62,7 +62,7 @@ jobs:
         uses: docker/login-action@v3
         with:
           registry: registry.kmrd.dev
-          username: sdcio-builder
+          username: iptecharch-builder
           password: ${{ secrets.K8S_REGISTRY_HANS }}
 
       - name: Run GoReleaser