chore(mix): prepare 2.2.0-beta.1 (#993)

Author: leoafarias

packages/mix/CHANGELOG.md

@@ -1,3 +1,11 @@
+## 2.2.0-beta.1
+
+### Fixes
+
+- **Box shadow blur styles:** `BoxShadowMix` now preserves non-default
+  `BoxShadow.blurStyle` values across construction, conversion, merging,
+  resolution, diagnostics, equality, and its fluent and factory APIs (#992).
+
 ## 2.2.0-beta.0
 
 ### New features

packages/mix/pubspec.yaml

@@ -1,6 +1,6 @@
 name: mix
 description: An expressive way to effortlessly build design systems in Flutter.
-version: 2.2.0-beta.0
+version: 2.2.0-beta.1
 homepage: https://github.com/btwld/mix
 repository: https://github.com/btwld/mix/tree/main/packages/mix