ci: rename GITHUB_ to GH_

Author: barelyhuman

.github/workflows/docker-pub.yml

@@ -20,11 +20,11 @@ jobs:
         uses: docker/login-action@v1
         env:
           GITHUB_USER: ${{ github.actor }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
         with:
           registry: ghcr.io
           username: $GITHUB_USER
-          password: ${{ secrets.GITHUB_TOKEN }}
+          password: ${{ secrets.GH_TOKEN }}
 
       - name: Build and Push Docker Image
         env: