fix: remove GHCR login — public images should pull without auth

Author: jpr5

.github/workflows/starter-smoke.yml

@@ -45,13 +45,6 @@ jobs:
           fetch-depth: 1
           lfs: false
 
-      - name: Login to GHCR
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
       - name: Run starter smoke tests
         working-directory: examples/integrations/${{ matrix.starter }}
         env: