Bump ancestry from 4.1.0 to 4.2.0 (#193)

Bumps [ancestry](https://github.com/stefankroes/ancestry) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/stefankroes/ancestry/releases)
- [Changelog](https://github.com/stefankroes/ancestry/blob/master/CHANGELOG.md)
- [Commits](stefankroes/ancestry@v4.1.0...v4.2.0)

---
updated-dependencies:
- dependency-name: ancestry
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

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

Gemfile.lock

@@ -25,7 +25,7 @@ GEM
       minitest (>= 5.1)
       tzinfo (~> 2.0)
     addressable (2.4.0)
-    ancestry (4.1.0)
+    ancestry (4.2.0)
       activerecord (>= 5.2.6)
     appraisal (2.4.1)
       bundler