Update Flutter version

Author: trustpin-dev

.github/workflows/deploy-docs.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Setup Flutter
       uses: subosito/flutter-action@v2
       with:
-        flutter-version: '3.32.8'
+        flutter-version: '3.38.0'
         channel: 'stable'
 
     - name: Install dependencies