Bump sprockets from 3.7.2 to 4.2.1

Bumps [sprockets](https://github.com/rails/sprockets) from 3.7.2 to 4.2.1.
- [Release notes](https://github.com/rails/sprockets/releases)
- [Changelog](https://github.com/rails/sprockets/blob/main/CHANGELOG.md)
- [Commits](rails/sprockets@v3.7.2...v4.2.1)

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

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

Gemfile

@@ -4,7 +4,7 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}.git" }
 
 ruby File.open(File.expand_path(".ruby-version", File.dirname(__FILE__))) { |f| f.read.chomp }
 gem 'rails', "~> 7.0"
-gem 'sprockets', '< 4' # sprockets 4 causes issues we don't need to solve
+gem 'sprockets', '< 5' # sprockets 4 causes issues we don't need to solve
 
 # authorization
 gem 'devise'

Gemfile.lock

@@ -330,7 +330,7 @@ GEM
     pundit (2.3.0)
       activesupport (>= 3.0.0)
     racc (1.7.1)
-    rack (2.2.7)
+    rack (2.2.8)
     rack-test (2.1.0)
       rack (>= 1.3)
     rails (7.0.6)
@@ -463,9 +463,9 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sprockets (3.7.2)
+    sprockets (4.2.1)
       concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
+      rack (>= 2.2.4, < 4)
     sprockets-es6 (0.9.2)
       babel-source (>= 5.8.11)
       babel-transpiler
@@ -555,7 +555,7 @@ DEPENDENCIES
   sass-rails
   select2-rails
   sidekiq
-  sprockets (< 4)
+  sprockets (< 5)
   tinymce-rails
   uglifier (>= 1.0.3)
   unicorn