Merge pull request #20 from ruby-syntax-tree/dependabot/bundler/stackprof-0.2.19

Bump stackprof from 0.2.17 to 0.2.19

Author: kddnewton

Gemfile.lock

@@ -22,7 +22,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
-    stackprof (0.2.17)
+    stackprof (0.2.19)
 
 PLATFORMS
   x86_64-darwin-19