fix(deps): upgrade webrick dep (#1441)

An issue was discovered in the WEBrick toolkit through 1.8.1 for Ruby. It allows HTTP request smuggling by providing both a Content-Length header and a Transfer-Encoding header, e.g., "GET /admin HTTP/1.1\r\n" inside of a "POST /user HTTP/1.1\r\n" request. NOTE: the supplier's position is "Webrick should not be used in production."

docs/Gemfile.lock

@@ -265,7 +265,7 @@ GEM
     unf_ext (0.0.9.1)
     unicode-display_width (1.8.0)
     uri (0.13.0)
-    webrick (1.8.1)
+    webrick (1.8.2)
 
 PLATFORMS
   ruby