FIX(ci): use crane debug image for shell support

- Change crane image tag from latest to debug
- Debug tag includes busybox shell for script execution

.gitea/workflows/build-push.yaml

@@ -43,7 +43,7 @@ jobs:
                     mountPath: /workspace
                 containers:
                 - name: crane
-                  image: gcr.io/go-containerregistry/crane:latest
+                  image: gcr.io/go-containerregistry/crane:debug
                   command: ["/bin/sh", "-c"]
                   args:
                   - |