Fix: Intégration du DatePicker français et mise à jour des dépendances SDK

lib/app.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'core/theme/app_theme.dart';
 import 'features/home/home_screen.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 
 class BullyApp extends StatelessWidget {
   const BullyApp({super.key});
@@ -13,6 +14,16 @@ class BullyApp extends StatelessWidget {
       theme: AppTheme.lightTheme,
       darkTheme: AppTheme.darkTheme,
       themeMode: ThemeMode.system,
+      localizationsDelegates: const [
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+      ],
+      supportedLocales: const [
+        Locale('fr', 'FR'), // Français
+      ],
+      locale: const Locale('fr', 'FR'), // Force l'interface en français
+
       home: const HomeScreen(),
     );
   }