Merge pull request #1 from ruby-syntax-tree/dependabot/bundler/minitest-5.16.0

Bump minitest from 5.15.0 to 5.16.0

Author: github-actions[bot]

Gemfile.lock

@@ -9,7 +9,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     docile (1.4.0)
-    minitest (5.15.0)
+    minitest (5.16.0)
     prettier_print (0.1.0)
     rake (13.0.6)
     simplecov (0.21.2)