bump web_socket dependency 0.1.3 -> 0.1.5 (dart-lang/web_socket_channel#370)

pkgs/web_socket_channel/pubspec.yaml

diff --git a/pkgs/web_socket_channel/pubspec.yaml b/pkgs/web_socket_channel/pubspec.yaml
index 3b65640..a4fbefc 100644
--- a/pkgs/web_socket_channel/pubspec.yaml
+++ b/pkgs/web_socket_channel/pubspec.yaml
@@ -14,7 +14,7 @@
   crypto: ^3.0.0
   stream_channel: ^2.1.0
   web: ^0.5.0
-  web_socket: ^0.1.3
+  web_socket: ^0.1.5
 
 dev_dependencies:
   dart_flutter_team_lints: ^3.0.0