[dart] package: bump version to 1.2.0

Author: jooy2

packages/dart/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog (Dart)
 
-## 1.1.13 (2026--)
+## 1.2.0 (2026-04-14)
 
 - **BREAKING CHANGES**: `strToNumberHash` has renamed to `numberHash`
 - `md5Hash`, `sha1Hash`, `sha256Hash`: Add an encoding option for hash functions

packages/dart/pubspec.yaml

@@ -1,7 +1,7 @@
 name: qsu
 description: >-
   qsu is a utility library that contains useful and frequently used functions. Start with your preferred language and the modern development environment.
-version: 1.1.12
+version: 1.2.0
 repository: https://github.com/jooy2/qsu
 homepage: https://qsu.cdget.com