Update the version of photo manager

pubspec.lock

@@ -400,7 +400,7 @@ packages:
       name: photo_manager
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.5.5+1"
+    version: "0.5.6"
   photo_view:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -23,7 +23,7 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.2
-  photo_manager: ^0.5.5+1
+  photo_manager: ^0.5.6
   provider: ^3.1.0
   sqflite: ^1.3.0
   path_provider: ^1.6.5