Do not push to GHCR.io for dependabot

Author: ascheman

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Log in to GHCR
-        if: github.event_name != 'pull_request'
+        if: github.event_name != 'pull_request' && github.actor != 'dependabot[bot]'
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
@@ -89,7 +89,7 @@ jobs:
         with:
           context: .
           platforms: linux/amd64,linux/arm64
-          push: ${{ github.event_name != 'pull_request' && !env.ACT }}
+          push: ${{ github.event_name != 'pull_request' && github.actor != 'dependabot[bot]' && !env.ACT }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha