Use StacklokLabs for GHCR (#138)

Signed-off-by: Juan Antonio Osorio <ozz@stacklok.com>

Author: JAORMX

.github/workflows/image-build-and-publish.yml

@@ -12,7 +12,7 @@ jobs:
       id-token: write
 
     env:
-      BASE_REPO: "ghcr.io/stacklok/toolhive"
+      BASE_REPO: "ghcr.io/stackloklabs/toolhive"
 
     steps:
       - name: Checkout repository