fix the gcp auth ref

Signed-off-by: Basma1912 <[email protected]>

Author: Basma1912

.github/workflows/build-and-push.yml

@@ -114,7 +114,7 @@ jobs:
         with:
            registry: ${{ env.GAR_LOCATION }}-docker.pkg.dev
            username: oauth2accesstoken
-           password: ${{ steps.gcp-auth.outputs.access_token }}
+           password: ${{ steps.gcp_auth.outputs.access_token }}
 
       - id: push-existing-image-to-gar
         name: Push existing image to GAR