Update dependency dart to v3.9.4

moneymgr_mobile/pubspec.yaml

@@ -19,7 +19,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 1.0.0+1
 
 environment:
-  sdk: 3.10.0
+  sdk: 3.9.4
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions

moneymgr_web/package.json

@@ -36,11 +36,11 @@
     "@types/react": "^19.2.2",
     "@types/react-dom": "^19.2.2",
     "@vitejs/plugin-react": "^4.7.0",
-    "eslint": "^9.39.1",
+    "eslint": "^9.32.0",
     "eslint-plugin-react-dom": "^1.52.4",
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^00.4.20",
-    "eslint-plugin-react-x": "^1.53.1",
+    "eslint-plugin-react-x": "^1.52.9",
     "globals": "^16.3.0",
     "typescript": "~5.8.3",
     "typescript-eslint": "^8.32.1",