Update photo manager version to 0.4.3.

CHANGELOG.md

 # CHANGELOG
 
+## 0.4.3
+
+Rollback `photo_manager` to `0.4.3`.
+
 ## 0.4.2+1
 
 Rollback `photo_manager` to `0.4.2`.

pubspec.lock

       name: photo_manager
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.4.2"
+    version: "0.4.3"
   quiver:
     dependency: transitive
     description:

pubspec.yaml

 name: photo
 description: image picker, multi picker support video/icloud asset, use flutter as ui, if you want to build custom ui, you just use photo_manager.
-version: 0.4.2+1
+version: 0.4.3
 author: caijinglong<cjl_spy@163.com>
 homepage: https://github.com/CaiJingLong/flutter_photo
 
   flutter:
     sdk: flutter
 
-  photo_manager: ^0.4.2
+  photo_manager: ^0.4.3
   # photo_manager:
   #   git:
   #     url: https://github.com/CaiJingLong/flutter_photo_manager.git