rubocop corrections

bin/spring

@@ -1,13 +1,15 @@
 #!/usr/bin/env ruby
-if !defined?(Spring) && [nil, "development", "test"].include?(ENV["RAILS_ENV"])
-  gem "bundler"
-  require "bundler"
+# frozen_string_literal: true
+
+if !defined?(Spring) && [nil, 'development', 'test'].include?(ENV['RAILS_ENV'])
+  gem 'bundler'
+  require 'bundler'
 
   # Load Spring without loading other gems in the Gemfile, for speed.
-  Bundler.locked_gems&.specs&.find { |spec| spec.name == "spring" }&.tap do |spring|
+  Bundler.locked_gems&.specs&.find { |spec| spec.name == 'spring' }&.tap do |spring|
     Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
-    gem "spring", spring.version
-    require "spring/binstub"
+    gem 'spring', spring.version
+    require 'spring/binstub'
   rescue Gem::LoadError
     # Ignore when Spring is not installed.
   end