Bump vernier from 1.5.0 to 1.6.0 (#2019)

Bumps [vernier](https://github.com/jhawthorn/vernier) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/jhawthorn/vernier/releases)
- [Commits](https://github.com/jhawthorn/vernier/compare/v1.5.0...v1.6.0)

---
updated-dependencies:
- dependency-name: vernier
  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

@@ -498,7 +498,7 @@ GEM
     useragent (0.16.11)
     vcr (6.3.1)
       base64
-    vernier (1.5.0)
+    vernier (1.6.0)
     web-console (4.2.1)
       actionview (>= 6.0.0)
       activemodel (>= 6.0.0)