graalvm-jdk@21: migrate from `homebrew/cask-versions`

Casks/g/graalvm-jdk@21.rb

@@ -0,0 +1,30 @@
+cask "graalvm-jdk@21" do
+  arch arm: "aarch64", intel: "x64"
+
+  version "21.0.3"
+  sha256 arm:   "501b3163e663f154bd816fa889810f94004530e6fcef62e6e87554247d0952c0",
+         intel: "6d29cacd2e3b46ee33d573757f1098fec5b487a89a98f68a5315d45a4f89a1bb"
+
+  url "https://download.oracle.com/graalvm/#{version.major}/archive/graalvm-jdk-#{version}_macos-#{arch}_bin.tar.gz",
+      verified: "download.oracle.com/"
+  name "GraalVM Java Development Kit"
+  desc "GraalVM from Oracle"
+  homepage "https://www.graalvm.org/"
+
+  livecheck do
+    url "https://www.oracle.com/java/technologies/downloads/"
+    regex(/graalvm\s+for\s+jdk\s+(21(?:\.\d+)+)/i)
+  end
+
+  artifact "graalvm-jdk-#{version}+7.1", target: "/Library/Java/JavaVirtualMachines/graalvm-#{version.major}.jdk"
+
+  # No zap stanza required
+
+  caveats do
+    license "https://www.oracle.com/downloads/licenses/graal-free-license.html"
+    <<~EOS
+      According to https://www.graalvm.org/jdk21/docs/getting-started/macos/
+        This app will not work with quarantine attributes.
+    EOS
+  end
+end