Require package:jni >= 0.7.1 to fix macOS build (#1041)

Author: brianquinlan

pkgs/cronet_http/CHANGELOG.md

@@ -1,4 +1,7 @@
 ## 0.4.1
+ 
+* Require `package:jni >= 0.7.1` so that depending on `package:cronet_http` 
+  does not break macOS builds.
 
 * Fix obsolete `CronetClient()` constructor usage.
 

pkgs/cronet_http/pubspec.yaml

@@ -12,7 +12,7 @@ dependencies:
   flutter:
     sdk: flutter
   http: '>=0.13.4 <2.0.0'
-  jni: ^0.7.0
+  jni: ^0.7.1
 
 dev_dependencies:
   dart_flutter_team_lints: ^1.0.0