Update http and SDK constraints

Author: ThexXTURBOXx

templates/flutter/pubspec.yaml.twig

@@ -13,15 +13,15 @@ platforms:
   web:
   windows:
 environment:
-  sdk: '>=2.17.0 <3.0.0'
+  sdk: '>=2.17.0 <4.0.0'
 
 dependencies:
   flutter:
     sdk: flutter
   cookie_jar: ^4.0.3
   device_info_plus: ^9.0.2
   flutter_web_auth_2: ^3.0.0
-  http: '>=0.13.6 <1.0.1'
+  http: '>=0.13.6 <2.0.0'
   package_info_plus: ^4.0.2
   path_provider: ^2.0.15
   web_socket_channel: ^2.4.0
@@ -32,4 +32,4 @@ dev_dependencies:
   flutter_lints: ^2.0.1
   flutter_test:
     sdk: flutter
-  mockito: ^5.4.0
+  mockito: ^5.4.0