chore(deps): update dependency lints to v6

Author: renovate[bot]

pubspec.yaml

@@ -14,7 +14,7 @@ dependencies:
   disposebag: ^1.5.1
 
 dev_dependencies:
-  lints: ^1.0.1
+  lints: 6.0.0
   test: ^1.17.12
   rxdart: ^0.27.5
   built_collection: ^5.1.1