New login method for apptainer

Author: almahmoud

.github/workflows/build_apptainer.yaml

@@ -61,7 +61,7 @@ jobs:
 
       - name: Login to GitHub Container Registry
         run: |
-          echo "${{ secrets.GITHUB_TOKEN }}" | apptainer remote login -u ${{ github.actor }} --password-stdin oras://ghcr.io
+          echo "${{ secrets.GITHUB_TOKEN }}" | apptainer registry login -u ${{ github.actor }} --password-stdin oras://ghcr.io
 
       - name: Push to GitHub Container Registry
         run: |