fix: corriger l'écriture des versions Flutter et Node dans les variables d'environnement

Author: koromerzhin

.github/workflows/ci.yml

@@ -24,8 +24,8 @@ jobs:
           FLUTTER_VERSION=$(grep "FLUTTER_VERSION=" .env.example | cut -d '=' -f2)
           NODE_VERSION=$(grep "NODE_VERSION=" .env.example | cut -d '=' -f2)
           
-          echo "flutter-version=$FLUTTER_VERSION" >> $GITHUB_OUTPUT
-          echo "node-version=$NODE_VERSION" >> $GITHUB_OUTPUT
+          echo "flutter-version=$FLUTTER_VERSION" >> "$GITHUB_OUTPUT"
+          echo "node-version=$NODE_VERSION" >> "$GITHUB_OUTPUT"
           
           echo "Flutter version: $FLUTTER_VERSION"
           echo "Node version: $NODE_VERSION"