Add Terraform v1.9.8 (#257)

Co-authored-by: github-actions <[email protected]>

Casks/terraform-1-9-8.rb

@@ -0,0 +1,19 @@
+cask "terraform-1-9-8" do
+  name "Terraform"
+  homepage "https://www.terraform.io/"
+
+  version "1.9.8"
+
+  arch intel: "amd64", arm: "arm64"
+
+  sha256 intel: "be591e8c59c49d0cfbc7664d24910a4b43840b89d0a4bbca662149bbf0397e91",
+    arm: "873d7b925d08578fb6bb9c12c7cd92ae73e289e07c360f2fdd69f9036b7baaab"
+
+  url "https://releases.hashicorp.com/terraform/#{version}/terraform_#{version}_darwin_#{arch}.zip",
+    verified: "releases.hashicorp.com/terraform"
+
+
+  # Binaries not installed as multiple versions are expected to coexist.
+  # Normally the wanted version is selected with `chtf`.
+  stage_only true
+end