Bump webrick from 1.7.0 to 1.8.1

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

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

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

Gemfile

@@ -14,4 +14,4 @@ group :jekyll_plugins do
   gem 'jekyll-seo-tag'
 end
 
-gem "webrick", "~> 1.7"
+gem "webrick", "~> 1.8"

Gemfile.lock

@@ -73,7 +73,7 @@ GEM
     tzinfo-data (1.2022.7)
       tzinfo (>= 1.0.0)
     unicode-display_width (2.4.2)
-    webrick (1.7.0)
+    webrick (1.8.1)
 
 PLATFORMS
   ruby
@@ -84,7 +84,7 @@ DEPENDENCIES
   jekyll-seo-tag
   jekyll-sitemap
   tzinfo-data
-  webrick (~> 1.7)
+  webrick (~> 1.8)
 
 BUNDLED WITH
    2.2.22