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

@@ -32,4 +32,4 @@ end
 gem "wdm", "~> 0.1.1" if Gem.win_platform?
 
 
-gem "webrick", "~> 1.8"
+gem "webrick", "~> 1.9"

Gemfile.lock

@@ -75,7 +75,7 @@ GEM
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.6.0)
-    webrick (1.8.2)
+    webrick (1.9.0)
 
 PLATFORMS
   arm64-darwin
@@ -88,7 +88,7 @@ DEPENDENCIES
   jekyll-last-modified-at
   jekyll-seo-tag
   jekyll-sitemap
-  webrick (~> 1.8)
+  webrick (~> 1.9)
 
 BUNDLED WITH
    2.5.7