docs: update docs to match new dart sdk version required (#1260)

Author: matiasleyba

docs/docs/overview.md

@@ -32,7 +32,7 @@ Depending on the number of flavors you plan to create for your project, the setu
 In order to generate a project using the news template, you must have the [Dart SDK][dart_installation_link] installed on your machine.
 
 :::info
-Dart `">=3.3.0 <4.0.0"` is required.
+Dart `">=3.4.0 <4.0.0"` is required.
 :::
 
 **Mason**