Bump version and add changelog

Author: ThexXTURBOXx

flutter_web_auth_2/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 5.0.0-alpha.1
+
+- 🌹 Added migration guide for `5.x` and updated migration guide for `4.x`
+
 ## 5.0.0-alpha.0
 
 - 💥 Update melos to `7.x` (requires SDK `>=3.5.0`)

flutter_web_auth_2/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_web_auth_2
 description: Flutter plugin for authenticating a user with a web service.
-version: 5.0.0-alpha.0
+version: 5.0.0-alpha.1
 resolution: workspace
 homepage: https://github.com/ThexXTURBOXx/flutter_web_auth_2
 repository: https://github.com/ThexXTURBOXx/flutter_web_auth_2