Apply Layout/LineLength rubocop rule

Note we're excluding a few files:

* Configuration files that weren't generated by us
* Migration files that weren't generated by us
* The Gemfile, since it includes an important comment that must be on
  the same line as the gem declaration
* The Budget::Stats class, since the heading statistics are a mess and
  having shorter lines would require a lot of refactoring

spec/components/account/permissions_list_component_spec.rb

@@ -11,7 +11,8 @@ describe Account::PermissionsListComponent do
   it "adds a hint when an action cannot be performed" do
     render_inline Account::PermissionsListComponent.new(User.new)
 
-    expect(page).to have_css "li", exact_text: "Additional verification needed Support proposals", normalize_ws: true
+    expect(page).to have_css "li", exact_text: "Additional verification needed Support proposals",
+                                   normalize_ws: true
     expect(page).to have_css "li", exact_text: "Participate in debates", normalize_ws: true
   end
 end