Bump webpacker from 5.3.0 to 5.4.0

Bumps [webpacker](https://github.com/rails/webpacker) from 5.3.0 to 5.4.0.
- [Release notes](https://github.com/rails/webpacker/releases)
- [Changelog](https://github.com/rails/webpacker/blob/master/CHANGELOG.md)
- [Commits](rails/webpacker@v5.3.0...v5.4.0)

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -16,7 +16,7 @@ gem 'sass-rails', '>= 6'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
 gem 'bootstrap-sass', '~> 3.4.1'
 gem 'bootstrap-will_paginate', '~> 1.0.0'
-gem 'webpacker', '~> 5.3'
+gem 'webpacker', '~> 5.4'
 # Use jquery as the JavaScript library
 gem 'jquery-rails'
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks

Gemfile.lock

@@ -84,7 +84,7 @@ GEM
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
     childprocess (3.0.0)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.1.9)
     crass (1.0.6)
     erubi (1.10.0)
     execjs (2.7.0)
@@ -102,19 +102,19 @@ GEM
     listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    loofah (2.9.1)
+    loofah (2.10.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (1.0.1)
     method_source (1.0.0)
     mini_mime (1.0.3)
-    mini_portile2 (2.5.1)
+    mini_portile2 (2.5.3)
     minitest (5.14.4)
     msgpack (1.4.2)
     nio4r (2.5.7)
-    nokogiri (1.11.3)
+    nokogiri (1.11.7)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     pg (1.2.3)
@@ -123,7 +123,7 @@ GEM
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
-    rack-proxy (0.6.5)
+    rack-proxy (0.7.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -204,7 +204,7 @@ GEM
       nokogiri (~> 1.6)
       rubyzip (>= 1.3.0)
       selenium-webdriver (>= 3.0, < 4.0)
-    webpacker (5.3.0)
+    webpacker (5.4.0)
       activesupport (>= 5.2)
       rack-proxy (>= 0.6.1)
       railties (>= 5.2)
@@ -242,7 +242,7 @@ DEPENDENCIES
   tzinfo-data
   web-console (>= 3.3.0)
   webdrivers
-  webpacker (~> 5.3)
+  webpacker (~> 5.4)
   will_paginate (~> 3.3.0)
 
 RUBY VERSION