[shared_preferences_linux] update file package dep version to be compatible with framework (flutter#2950)

Author: Chris Yang

packages/shared_preferences/shared_preferences_linux/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.0.2+2
+
+* Bump the `file` package dependency to resolve dep conflicts with `flutter_driver`.
+
 ## 0.0.2+1
 * Replace path_provider dependency with path_provider_linux.
 

packages/shared_preferences/shared_preferences_linux/pubspec.yaml

@@ -1,6 +1,6 @@
 name: shared_preferences_linux
 description: Linux implementation of the shared_preferences plugin
-version: 0.0.2+1
+version: 0.0.2+2
 homepage: https://github.com/flutter/plugins/tree/master/packages/shared_preferences/shared_preferences_linux
 
 flutter:
@@ -15,7 +15,7 @@ environment:
   flutter: ">=1.12.8 <2.0.0"
 
 dependencies:
-  file: ^5.1.0
+  file: ">=5.1.0 <7.0.0"
   flutter:
     sdk: flutter
   meta: ^1.0.4