Bump appraisal from 2.4.0 to 2.4.1 (#142)

Bumps [appraisal](https://github.com/thoughtbot/appraisal) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/thoughtbot/appraisal/releases)
- [Commits](thoughtbot/appraisal@v2.4.0...v2.4.1)

---
updated-dependencies:
- dependency-name: appraisal
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -28,7 +28,7 @@ GEM
     addressable (2.4.0)
     ancestry (4.1.0)
       activerecord (>= 5.2.6)
-    appraisal (2.4.0)
+    appraisal (2.4.1)
       bundler
       rake
       thor (>= 0.14.0)