Bump webrick from 1.7.0 to 1.8.2

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] <support@github.com>

Author: dependabot[bot]

Gemfile

@@ -29,4 +29,4 @@ gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 gem "wdm", "~> 0.1.0" if Gem.win_platform?
 
 
-gem "webrick", "~> 1.7"
+gem "webrick", "~> 1.8"

Gemfile.lock

@@ -263,7 +263,7 @@ GEM
       unf_ext
     unf_ext (0.0.9.1)
     unicode-display_width (1.8.0)
-    webrick (1.7.0)
+    webrick (1.8.2)
 
 PLATFORMS
   ruby
@@ -272,7 +272,7 @@ PLATFORMS
 DEPENDENCIES
   github-pages
   tzinfo-data
-  webrick (~> 1.7)
+  webrick (~> 1.8)
 
 BUNDLED WITH
    2.2.16