chore: Update main package version.

Author: fuzzybinary

src/dart/godot_dart/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.5.2
+
+- Fix `Future<void>` throwing an error when put in a Variant, which could happen with `async` signal recievers.
+
 ## 0.5.1
 
 - Bind `CallbackAwaiter` during initialization.

src/dart/godot_dart/pubspec.yaml

@@ -1,7 +1,7 @@
 name: godot_dart
 description: Dart bindings for the Godot game engine
 repository: https://github.com/fuzzybinary/godot_dart
-version: 0.5.1
+version: 0.5.2
 
 environment:
   sdk: '>=3.2.0 <4.0.0'