Bump irb from 1.4.3 to 1.5.1 (#2643)

Bumps [irb](https://github.com/ruby/irb) from 1.4.3 to 1.5.1.
- [Release notes](https://github.com/ruby/irb/releases)
- [Commits](https://github.com/ruby/irb/compare/v1.4.3...v1.5.1)

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

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

Gemfile.lock

@@ -82,7 +82,7 @@ GEM
       concurrent-ruby (~> 1.0)
     io-console (0.5.11)
     io-like (0.3.1)
-    irb (1.4.3)
+    irb (1.5.1)
       reline (>= 0.3.0)
     json (2.6.2)
     matrix (0.4.2)