Sync .ruby-version file across repositories

Although this feels a little weird having it in `.github`: it makes
sense to maintain a single, consistent `.ruby-version` across all our
repositories matching the Portable Ruby version we use in Homebrew.

While we're here, don't try to sync to the archived
Homebrew/homebrew-cask-* taps.

.github/actions/sync/triage-config.rb

@@ -16,6 +16,7 @@ def git(*args)
 [
   '.github/workflows/lock-threads.yml',
   '.github/workflows/stale-issues.yml',
+  '.ruby-version',
 ].each do |glob|
   src_paths = Pathname.glob(glob)
   dst_paths = Pathname.glob(target_dir.join(glob))

.github/workflows/sync-triage-config.yml

@@ -27,8 +27,6 @@ jobs:
           - Homebrew/homebrew-aliases
           - Homebrew/homebrew-bundle
           - Homebrew/homebrew-cask
-          - Homebrew/homebrew-cask-fonts
-          - Homebrew/homebrew-cask-versions
           - Homebrew/homebrew-command-not-found
           - Homebrew/homebrew-core
           - Homebrew/homebrew-formula-analytics

.ruby-version

@@ -0,0 +1 @@
+3.3.1