build(deps): bump shakapacker from 8.3.0 to 8.4.0

Bumps [shakapacker](https://github.com/shakacode/shakapacker) from 8.3.0 to 8.4.0.
- [Changelog](https://github.com/shakacode/shakapacker/blob/main/CHANGELOG.md)
- [Commits](shakacode/shakapacker@v8.3.0...v8.4.0)

---
updated-dependencies:
- dependency-name: shakapacker
  dependency-version: 8.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile

@@ -39,7 +39,7 @@ gem 'rqrcode'
 gem 'ruby-openai'
 gem 'rubyzip'
 gem 'sassc-rails'
-gem 'shakapacker', '8.3.0'
+gem 'shakapacker', '8.4.0'
 gem 'simple_form'
 gem 'slim-rails'
 gem 'solid_cable'

Gemfile.lock

@@ -547,7 +547,7 @@ GEM
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
     set (1.1.2)
-    shakapacker (8.3.0)
+    shakapacker (8.4.0)
       activesupport (>= 5.2)
       package_json
       rack-proxy (>= 0.6.1)
@@ -722,7 +722,7 @@ DEPENDENCIES
   selenium-webdriver
   sentry-rails
   sentry-ruby
-  shakapacker (= 8.3.0)
+  shakapacker (= 8.4.0)
   shoulda-matchers
   simple_form
   simplecov
@@ -952,7 +952,7 @@ CHECKSUMS
   sentry-rails (5.27.0) sha256=e7553d9ce6ad12b50a6b58ab7de0822411732405d798859f1ca65ce3033c209b
   sentry-ruby (5.27.0) sha256=82e4006d65ee8936dbfed765bd507e87f53873136a573784a41253f683014ea7
   set (1.1.2) sha256=ca33a60d202e788041d94a5d4c12315b1639875576f1a266f3a10913646d8ef1
-  shakapacker (8.3.0) sha256=bdf41f950792f049235bc15e6936811c11cfde920cf3436bc0438eaf0aba01c0
+  shakapacker (8.4.0) sha256=df234ed4a9173407adc288df0d7f156c485ada9214b23d8f0e2c734f11c1aca8
   shoulda-matchers (6.5.0) sha256=ef6b572b2bed1ac4aba6ab2c5ff345a24b6d055a93a3d1c3bfc86d9d499e3f44
   simple_form (5.3.1) sha256=3891a36a89a7f8c69f1361624c5357591578a9e9c318257cd7b9cc7b6ce47460
   simplecov (0.22.0) sha256=fe2622c7834ff23b98066bb0a854284b2729a569ac659f82621fc22ef36213a5