Update ftp-sync.yml

Author: laurentabbal

.github/workflows/ftp-sync.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 🚚 Get latest code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: 📂 Sync files
       uses: SamKirkland/FTP-Deploy-Action@v4.3.5