Support rbs v4

Author: ksss

.github/workflows/test.yml

@@ -34,7 +34,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rbs: ['latest', '3.10', '3.8', '3.6', '3.4', '3.3', '3.0', '2.7.0']
+        rbs: ['latest', '4.0', '3.10', '3.8', '3.6', '3.4', '3.3', '3.0', '2.7.0']
     env:
       GEMFILE_RBS_VERSION: ${{ matrix.rbs }}
     steps:

repl_type_completor.gemspec

@@ -30,5 +30,5 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "prism", "~> 1.0"
-  spec.add_dependency "rbs", ">= 2.7.0", "< 4.0.0"
+  spec.add_dependency "rbs", ">= 2.7.0"
 end