🚨 Lint lock update

Author: pboling

.rubocop_gradual.lock

@@ -21,9 +21,6 @@
   "lib/oauth2/response.rb:2054901929": [
     [53, 5, 204, "Style/ClassMethodsDefinitions: Use `class << self` to define a class method.", 996912427]
   ],
-  "oauth2.gemspec:1312558048": [
-    [5, 23, 12, "Gemspec/RubyVersionGlobalsUsage: Do not use `RUBY_VERSION` in gemspec file.", 31296028]
-  ],
   "spec/oauth2/access_token_spec.rb:1202129469": [
     [3, 1, 34, "RSpec/SpecFilePathFormat: Spec path should end with `o_auth2/access_token*_spec.rb`.", 1972107547],
     [789, 13, 25, "RSpec/ContextWording: Context description should match /^when\\b/, /^with\\b/, or /^without\\b/.", 770233088],