chore(release): 1.21.0-dev.1 [skip ci]

# [1.21.0-dev.1](v1.20.1...v1.21.0-dev.1) (2024-04-16)

### Features

* open browser when clicking on changelog link ([bc300d8](bc300d8))

pubspec.yaml

@@ -4,7 +4,7 @@ homepage: https://github.com/ReVanced/revanced-manager
 
 publish_to: 'none'
 
-version: 1.20.1+101800016
+version: 1.21.0-dev.1+101800017
 
 environment:
   sdk: '>=3.0.0 <4.0.0'