Bump webrick from 1.8.1 to 1.8.2 (heroku#1328)

Bumps [webrick](https://github.com/ruby/webrick) from 1.8.1 to 1.8.2.
- [Release notes](https://github.com/ruby/webrick/releases)
- [Commits](ruby/webrick@v1.8.1...v1.8.2)

---
updated-dependencies:
- dependency-name: webrick
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -42,7 +42,7 @@ GEM
     sem_version (2.0.1)
     thor (1.3.1)
     threaded (0.0.4)
-    webrick (1.8.1)
+    webrick (1.8.2)
 
 PLATFORMS
   ruby