update CI. (#287)

* update.

* update.

* pub update.

* fix import_sorter.

* fix analyze.

pubspec.yaml

@@ -15,7 +15,7 @@ dependencies:
     sdk: flutter
   async: ^2.9.0
   collection: ^1.16.0
-  connectivity_plus: ^3.0.6
+  connectivity_plus: ^4.0.0
   cryptography: ^2.0.5
   fixnum: ^1.0.1
   meta: ^1.8.0
@@ -24,9 +24,9 @@ dependencies:
   uuid: ^3.0.6
   synchronized: ^3.0.0+3
   protobuf: ^2.1.0
-  flutter_webrtc: 0.9.28
+  flutter_webrtc: ^0.9.30+hotfix.1
   flutter_window_close: ^0.2.2
-  device_info_plus: ^8.0.0
+  device_info_plus: ^9.0.0
   webrtc_interface: 1.0.13
   dart_webrtc: 1.0.16
   js: ^0.6.4