Bump stackprof from 0.2.17 to 0.2.19

Bumps [stackprof](https://github.com/tmm1/stackprof) from 0.2.17 to 0.2.19.
- [Release notes](https://github.com/tmm1/stackprof/releases)
- [Changelog](https://github.com/tmm1/stackprof/blob/master/CHANGELOG.md)
- [Commits](tmm1/stackprof@v0.2.17...v0.2.19)

---
updated-dependencies:
- dependency-name: stackprof
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] 

Author: dependabot[bot]

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