Bump irb from 1.8.1 to 1.8.3 (#170)

Bumps [irb](https://github.com/ruby/irb) from 1.8.1 to 1.8.3.
- [Release notes](https://github.com/ruby/irb/releases)
- [Commits](https://github.com/ruby/irb/compare/v1.8.1...v1.8.3)

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

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

Gemfile.lock

@@ -2,15 +2,15 @@ GEM
   remote: https://rubygems.org/
   specs:
     io-console (0.6.0)
-    irb (1.8.1)
+    irb (1.8.3)
       rdoc
       reline (>= 0.3.8)
     liquid (5.4.0)
-    psych (5.1.0)
+    psych (5.1.1.1)
       stringio
     rdoc (6.5.0)
       psych (>= 4.0.0)
-    reline (0.3.8)
+    reline (0.3.9)
       io-console (~> 0.5)
     rugged (1.5.1)
     stringio (3.0.8)