Add wicked_pdf gem

Visiting the application root now results in the following error.

3: from actionview-6.0.2.2/lib/action_view/renderer/template_renderer.rb:59:in `block (2 levels) in render_template'
2: from actionview-6.0.2.2/lib/action_view/template.rb:182:in `render'
1: from actionview-6.0.2.2/lib/action_view/template.rb:188:in `rescue in render'

actionview-6.0.2.2/lib/action_view/template.rb:355:in `handle_render_error': can't modify frozen fatal: #<fatal: exception reentered> (ActionView::Template::Error)

Possibly related: mileszs/wicked_pdf#876

Author: spdawson

Gemfile

@@ -54,3 +54,5 @@ end
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 gem 'view_component'
+
+gem 'wicked_pdf'

Gemfile.lock

@@ -194,6 +194,8 @@ GEM
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.4)
+    wicked_pdf (2.0.2)
+      activesupport
     xpath (3.2.0)
       nokogiri (~> 1.8)
     zeitwerk (2.3.0)
@@ -220,6 +222,7 @@ DEPENDENCIES
   web-console (>= 3.3.0)
   webdrivers
   webpacker (~> 4.0)
+  wicked_pdf
 
 RUBY VERSION
    ruby 2.7.0p0