latest pkg:analyzer (#1130)

Author: kevmoo

json_serializable/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 6.1.6
+
+- Allow latest `package:analyzer`.
+
 ## 6.1.5
 
 - Fix enum support for upcoming enhanced enums in Dart 2.17.

json_serializable/pubspec.yaml

@@ -1,5 +1,5 @@
 name: json_serializable
-version: 6.1.5
+version: 6.1.6
 description: >-
   Automatically generate code for converting to and from JSON by annotating
   Dart classes.
@@ -8,7 +8,7 @@ environment:
   sdk: '>=2.14.0 <3.0.0'
 
 dependencies:
-  analyzer: '>=2.0.0 <4.0.0'
+  analyzer: '>=2.0.0 <5.0.0'
   async: ^2.8.0
   build: ^2.0.0
   build_config: '>=0.4.4 <2.0.0'