use null safe version of FlutterBleLib

MoralCode · MoralCode · commit f105cb121e4c · 2021-12-09T22:04:26.000-05:00
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
   flutter_ble_lib:
     git:
       url: git@github.com:dotintent/FlutterBleLib.git
-      ref: master
+      ref: develop
 
 dev_dependencies:
   flutter_test:
