플러터 의존성 추가

.gitea/workflows/code_check.yml

@@ -96,6 +96,11 @@ jobs:
                   working-directory: backend
                   args: --enable-only=gofmt,gofumpt
 
+            - name: Install Userfront dependencies
+              run: |
+                cd userfront
+                flutter pub get
+
             - name: Format Flutter userfront
               run: |
                   cd userfront