Merge pull request #142 from ruby-syntax-tree/dependabot/bundler/minitest-5.16.3

Bump minitest from 5.16.2 to 5.16.3

Author: github-actions[bot]

Gemfile.lock

@@ -10,7 +10,7 @@ GEM
     ast (2.4.2)
     docile (1.4.0)
     json (2.6.2)
-    minitest (5.16.2)
+    minitest (5.16.3)
     parallel (1.22.1)
     parser (3.1.2.1)
       ast (~> 2.4.1)