ci: Be explicit about homebrew-tap base

Author: cfunkhouser

.goreleaser.yml

@@ -77,6 +77,10 @@ homebrew_casks:
       pull_request:
         enabled: true
         draft: true # TODO(cfunkhouser): Delete after testing.
+        base:
+          owner: rest-sh
+          name: homebrew-tap
+          branch: main
       git:
         url: "[email protected]:rest-sh/homebrew-tap.git"
         private_key: /tmp/homebrew_repo_id_ed25519