Bump irb from 1.7.0 to 1.8.1

Bumps [irb](https://github.com/ruby/irb) from 1.7.0 to 1.8.1.
- [Release notes](https://github.com/ruby/irb/releases)
- [Commits](ruby/irb@v1.7.0...v1.8.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -66,7 +66,7 @@ group :test do
     gem 'rdoc', '~> 6.5'
     gem 'browserstack-local', '~> 1.4'
 
-    gem 'irb', '~> 1.7'
+    gem 'irb', '~> 1.8'
     gem 'pry-byebug', '~> 3.10', '>= 3.10.1'
 
     gem 'rest-client', '~> 2.1.0'

Gemfile.lock

@@ -67,8 +67,9 @@ GEM
       concurrent-ruby (~> 1.0)
     io-console (0.6.0)
     io-like (0.3.1)
-    irb (1.7.0)
-      reline (>= 0.3.0)
+    irb (1.8.1)
+      rdoc
+      reline (>= 0.3.8)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     matrix (0.4.2)
@@ -125,7 +126,7 @@ GEM
     rdoc (6.5.0)
       psych (>= 4.0.0)
     regexp_parser (2.8.1)
-    reline (0.3.5)
+    reline (0.3.8)
       io-console (~> 0.5)
     rest-client (2.1.0)
       http-accept (>= 1.7.0, < 2.0)
@@ -242,7 +243,7 @@ DEPENDENCIES
   eventmachine (~> 1.2, >= 1.2.7)
   execjs (~> 2.8, >= 2.8.1)
   geckodriver-helper (~> 0.24.0)
-  irb (~> 1.7)
+  irb (~> 1.8)
   json
   maxmind-db (~> 1.1, >= 1.1.1)
   mime-types (~> 3.4, >= 3.4.1)