Merge pull request #66 from ruby-syntax-tree/dependabot/bundler/rake-13.3.1

Bump rake from 13.3.0 to 13.3.1

Author: github-actions[bot]

Gemfile.lock

@@ -11,7 +11,7 @@ GEM
     docile (1.4.0)
     minitest (5.26.0)
     prettier_print (1.2.1)
-    rake (13.3.0)
+    rake (13.3.1)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)