Bump shakapacker from 6.6.0 to 8.1.0

Bumps [shakapacker](https://github.com/shakacode/shakapacker) from 6.6.0 to 8.1.0.
- [Changelog](https://github.com/shakacode/shakapacker/blob/main/CHANGELOG.md)
- [Commits](shakacode/shakapacker@v6.6.0...v8.1.0)

---
updated-dependencies:
- dependency-name: shakapacker
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Gemfile

@@ -57,7 +57,7 @@ gem 'simple_form'
 gem 'tinymce-rails'
 gem 'image_processing', '~> 1.13'
 gem 'react-rails'
-gem 'shakapacker', '~> 6.6'
+gem 'shakapacker', '~> 8.1'
 
 gem 'sidekiq'
 

Gemfile.lock

@@ -348,6 +348,7 @@ GEM
       rack
     orm_adapter (0.5.0)
     ostruct (0.6.1)
+    package_json (0.1.0)
     paper_trail (16.0.0)
       activerecord (>= 6.1)
       request_store (~> 1.4)
@@ -475,8 +476,9 @@ GEM
     sendgrid-ruby (6.7.0)
       ruby_http_client (~> 3.4)
     sexp_processor (4.16.1)
-    shakapacker (6.6.0)
+    shakapacker (8.1.0)
       activesupport (>= 5.2)
+      package_json
       rack-proxy (>= 0.6.1)
       railties (>= 5.2)
       semantic_range (>= 2.3.0)
@@ -603,7 +605,7 @@ DEPENDENCIES
   selectize-rails
   selenium-webdriver
   sendgrid-ruby
-  shakapacker (~> 6.6)
+  shakapacker (~> 8.1)
   sidekiq
   simple_form
   timecop