change platforms for rbs trace

Author: aguspe

rb/Gemfile

@@ -11,4 +11,4 @@ gem 'curb', '~> 1.0.5', require: false, platforms: %i[mri mingw x64_mingw]
 gem 'debug', '~> 1.7', require: false, platforms: %i[mri mingw x64_mingw]
 gem 'steep', '~> 1.5.0', require: false, platforms: %i[mri mingw x64_mingw]
 
-gem "rbs-trace", "~> 0.5.1"
+gem 'rbs-trace', '~> 0.5.1', require: false, platforms: %i[mri mingw x64_mingw]