Bump irb from 1.15.1 to 1.15.2

Bumps [irb](https://github.com/ruby/irb) from 1.15.1 to 1.15.2.
- [Release notes](https://github.com/ruby/irb/releases)
- [Commits](ruby/irb@v1.15.1...v1.15.2)

---
updated-dependencies:
- dependency-name: irb
  dependency-version: 1.15.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: Gemfile.lock

@@ -82,7 +82,7 @@ GEM
     io-console (0.8.0)
     io-endpoint (0.15.1)
     io-like (0.3.1)
-    irb (1.15.1)
+    irb (1.15.2)
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)