deeper: fix RuboCop style.

See https://github.com/Homebrew/brew/pull/7867.

Casks/deeper.rb

@@ -1,40 +1,41 @@
-cask 'deeper' do
-  macos_release = MacOS.version.to_s.delete('.')
+cask "deeper" do
+  macos_release = MacOS.version.to_s.delete(".")
 
-  if MacOS.version == :yosemite
-    version '2.0.4'
-    sha256 '70a8ae37e6a62541a03b1b144ff92bac38585ce936b1acc12ce484416db13b8f'
-  elsif MacOS.version == :el_capitan
-    version '2.1.4'
-    sha256 '3dc9607644872da14a0b6f20722e36d0cb6cb7ab2528f86de1cf059086cf2848'
-  elsif MacOS.version == :sierra
-    version '2.2.3'
-    sha256 '33fee21b65279e4459b6469dbc68f0c6df91663ed26d6b62042b21883efda0ed'
-  elsif MacOS.version == :high_sierra
-    version '2.3.3'
-    sha256 '08ac5820428bcce74548786e8fda947edfaa31cf4a822d5c443835e73a11dd3b'
-  elsif MacOS.version == :mojave
-    version '2.4.8'
-    sha256 '13dbe7bd680963aca91c40a4fd1e16648b63538f3213692db22dd91a3e3f2c89'
+  case MacOS.version
+  when :yosemite
+    version "2.0.4"
+    sha256 "70a8ae37e6a62541a03b1b144ff92bac38585ce936b1acc12ce484416db13b8f"
+  when :el_capitan
+    version "2.1.4"
+    sha256 "3dc9607644872da14a0b6f20722e36d0cb6cb7ab2528f86de1cf059086cf2848"
+  when :sierra
+    version "2.2.3"
+    sha256 "33fee21b65279e4459b6469dbc68f0c6df91663ed26d6b62042b21883efda0ed"
+  when :high_sierra
+    version "2.3.3"
+    sha256 "08ac5820428bcce74548786e8fda947edfaa31cf4a822d5c443835e73a11dd3b"
+  when :mojave
+    version "2.4.8"
+    sha256 "13dbe7bd680963aca91c40a4fd1e16648b63538f3213692db22dd91a3e3f2c89"
   else
-    version '2.5.8'
-    sha256 '0139ceb7b376df670f504bce74031ab4047070817c4d2168a6cc0a92cb946b82'
+    version "2.5.8"
+    sha256 "0139ceb7b376df670f504bce74031ab4047070817c4d2168a6cc0a92cb946b82"
   end
 
   url "https://www.titanium-software.fr/download/#{macos_release}/Deeper.dmg"
-  appcast 'https://www.titanium-software.fr/en/release_deeper.html'
-  name 'Deeper'
-  homepage 'https://www.titanium-software.fr/en/deeper.html'
+  appcast "https://www.titanium-software.fr/en/release_deeper.html"
+  name "Deeper"
+  homepage "https://www.titanium-software.fr/en/deeper.html"
 
   # Unusual case: The software will stop working, or is dangerous to run, on the next macOS release.
   depends_on macos: [
-                      :yosemite,
-                      :el_capitan,
-                      :sierra,
-                      :high_sierra,
-                      :mojave,
-                      :catalina,
-                    ]
+    :yosemite,
+    :el_capitan,
+    :sierra,
+    :high_sierra,
+    :mojave,
+    :catalina,
+  ]
 
-  app 'Deeper.app'
+  app "Deeper.app"
 end