Bump webrick from 1.7.0 to 1.8.2 in /site

Bumps [webrick](https://github.com/ruby/webrick) from 1.7.0 to 1.8.2.
- [Release notes](https://github.com/ruby/webrick/releases)
- [Commits](ruby/webrick@v1.7.0...v1.8.2)

---
updated-dependencies:
- dependency-name: webrick
  dependency-type: direct:production
...

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

Author: dependabot[bot]

site/Gemfile

@@ -15,7 +15,7 @@
 #
 source 'https://rubygems.org'
 gem 'jekyll', '~>4'
-gem "webrick", "~> 1.7"
+gem "webrick", "~> 1.8"
 
 group :jekyll_plugins do
   gem 'jekyll-redirect-from'

site/Gemfile.lock

@@ -58,7 +58,7 @@ GEM
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     unicode-display_width (1.8.0)
-    webrick (1.7.0)
+    webrick (1.8.2)
 
 PLATFORMS
   x86_64-linux
@@ -67,7 +67,7 @@ PLATFORMS
 DEPENDENCIES
   jekyll (~> 4)
   jekyll-redirect-from
-  webrick (~> 1.7)
+  webrick (~> 1.8)
 
 BUNDLED WITH
    2.3.11