build: update 'flutter_secure_storage' to version 6.0.0

Closes #97

Author: rafamizes

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- update 'flutter_secure_storage' dependency to version 6.0.0 —
+  [97](https://github.com/dartoos-dev/json_cache/issues/97).
+
 - documentation improvements —
   [95](https://github.com/dartoos-dev/json_cache/issues/95).
 

pubspec.lock

@@ -145,21 +145,21 @@ packages:
       name: flutter_secure_storage
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.0.2"
+    version: "6.0.0"
   flutter_secure_storage_linux:
     dependency: transitive
     description:
       name: flutter_secure_storage_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   flutter_secure_storage_macos:
     dependency: transitive
     description:
       name: flutter_secure_storage_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   flutter_secure_storage_platform_interface:
     dependency: transitive
     description:

pubspec.yaml

@@ -13,7 +13,7 @@ dependencies:
   encrypted_shared_preferences: ^3.0.1
   flutter:
     sdk: flutter
-  flutter_secure_storage: ^5.0.2
+  flutter_secure_storage: ^6.0.0
   hive: ^2.2.3
   localstorage: ^4.0.0+1
   mutex: ^3.0.0