Regenerate Dart bindings

Remove GetInfoRequest from example app
Update min Dart SDK version

lib/bindings/langs/flutter/scripts/pubspec.lock

@@ -37,10 +37,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: a1ace0a119f20aabc852d165077c036cd864315bd99b7eaa10a60100341941bf
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.0"
   file:
     dependency: transitive
     description:
@@ -114,4 +114,4 @@ packages:
     source: hosted
     version: "2.0.2"
 sdks:
-  dart: ">=3.0.0 <4.0.0"
+  dart: ">=3.4.0 <4.0.0"

lib/bindings/langs/flutter/scripts/pubspec.yaml

@@ -6,7 +6,7 @@ repository: https://github.com/breez/breez-liquid-sdk
 publish_to: none
 
 environment:
-  sdk: '>=3.0.0 <4.0.0'
+  sdk: '>=3.4.0 <4.0.0'
 
 dependencies:
   args: