Bump webrick from 1.8.2 to 1.9.0

Bumps [webrick](https://github.com/ruby/webrick) from 1.8.2 to 1.9.0.
- [Release notes](https://github.com/ruby/webrick/releases)
- [Commits](ruby/webrick@v1.8.2...v1.9.0)

---
updated-dependencies:
- dependency-name: webrick
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 gem 'github-pages'
-gem "webrick", "~> 1.8"
+gem "webrick", "~> 1.9"
 
 group :test do
     gem 'html-proofer'

Gemfile.lock

@@ -303,7 +303,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.1)
-    webrick (1.8.2)
+    webrick (1.9.0)
     yell (2.2.2)
     zeitwerk (2.6.17)
 
@@ -315,7 +315,7 @@ DEPENDENCIES
   html-proofer
   rake
   scss_lint
-  webrick (~> 1.8)
+  webrick (~> 1.9)
 
 BUNDLED WITH
    2.2.22