Merge pull request #19 from ruby-syntax-tree/dependabot/bundler/parser-3.1.1.0

Bump parser from 3.1.0.0 to 3.1.1.0

Author: kddnewton

Gemfile.lock

@@ -10,7 +10,7 @@ GEM
     benchmark-ips (2.9.3)
     docile (1.4.0)
     minitest (5.15.0)
-    parser (3.1.0.0)
+    parser (3.1.1.0)
       ast (~> 2.4.1)
     rake (13.0.6)
     ruby_parser (3.18.1)