[Tizen] ci: Add missing action (#365)

Author: JSUYA

.github/workflows/check-symbols.yml

@@ -13,6 +13,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - uses: actions/checkout@v4
+
       - uses: actions/checkout@v4
         with:
           repository: flutter-tizen/tizen_allowlist