Bump sprockets from 3.7.2 to 4.2.0

Bumps [sprockets](https://github.com/rails/sprockets) from 3.7.2 to 4.2.0.
- [Release notes](https://github.com/rails/sprockets/releases)
- [Changelog](https://github.com/rails/sprockets/blob/main/CHANGELOG.md)
- [Commits](rails/sprockets@v3.7.2...v4.2.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -45,7 +45,7 @@ gem 'responders'
 gem 'rubyzip', require: 'zip'
 gem 'sassc-rails'
 gem 'simple_form'
-gem 'sprockets', '~> 3.7.2', '< 4'
+gem 'sprockets', '~> 4.2.0'
 gem 'swagger-blocks'
 # noinspection RailsParamDefResolve
 gem 'tzinfo-data', platforms: %i(mingw mswin x64_mingw)

Gemfile.lock

@@ -484,9 +484,9 @@ GEM
     spring-watcher-listen (2.1.0)
       listen (>= 2.7, < 4.0)
       spring (>= 4)
-    sprockets (3.7.2)
+    sprockets (4.2.0)
       concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
+      rack (>= 2.2.4, < 4)
     sprockets-rails (3.4.2)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
@@ -588,7 +588,7 @@ DEPENDENCIES
   spring
   spring-commands-rspec
   spring-watcher-listen (~> 2.1.0)
-  sprockets (~> 3.7.2, < 4)
+  sprockets (~> 4.2.0)
   swagger-blocks
   tzinfo-data
   uglifier