chore(deps-dev): Bump irb from 1.9.0 to 1.9.1

Bumps [irb](https://github.com/ruby/irb) from 1.9.0 to 1.9.1.
- [Release notes](https://github.com/ruby/irb/releases)
- [Commits](ruby/irb@v1.9.0...v1.9.1)

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

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

Gemfile.lock

@@ -106,7 +106,7 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     io-console (0.6.0)
-    irb (1.9.0)
+    irb (1.9.1)
       rdoc
       reline (>= 0.3.8)
     json (2.6.3)