Update bundled_gems

gems/bundled_gems

@@ -5,5 +5,5 @@ rake 13.0.3 https://github.com/ruby/rake
 test-unit 3.4.0 https://github.com/test-unit/test-unit 3.4.0
 rexml 3.2.4 https://github.com/ruby/rexml
 rss 0.2.9 https://github.com/ruby/rss 0.2.9
-rbs 1.0.5 https://github.com/ruby/rbs
+rbs 1.0.6 https://github.com/ruby/rbs
 typeprof 0.12.0 https://github.com/ruby/typeprof