formula_auditor: skip dependency conflict audit for OpenSSL migration

We can't migrate the entire OpenSSL dependency tree in one go, so we'll
have to skip this audit in the interim.

See Homebrew/homebrew-core#133144.

Library/Homebrew/formula_auditor.rb

@@ -345,12 +345,28 @@ def audit_deps
       # TODO: remove this and check these there too.
       return if Homebrew::SimulateSystem.simulating_or_running_on_linux?
 
+      # Skip the versioned dependencies conflict audit on the OpenSSL migration branch.
+      # TODO: Remove this when OpenSSL migration is complete.
+      ignore_openssl_conflict = if (github_event_path = ENV.fetch("GITHUB_EVENT_PATH", nil)).present?
+        event_payload = JSON.parse(File.read(github_event_path))
+        head_info = event_payload.dig("pull_request", "head")
+
+        # We need to read the head ref from `GITHUB_EVENT_PATH` because
+        # `git branch --show-current` returns `master` on PR branches.
+        openssl_migration_branch = head_info["ref"] == "openssl-migration"
+        homebrew_owned_repo = head_info.dig("repo", "owner", "login") == "Homebrew"
+        homebrew_core_pr = head_info.dig("repo", "name") == "homebrew-core"
+
+        openssl_migration_branch && homebrew_owned_repo && homebrew_core_pr
+      end
+
       recursive_runtime_formulae = formula.runtime_formula_dependencies(undeclared: false)
       version_hash = {}
       version_conflicts = Set.new
       recursive_runtime_formulae.each do |f|
         name = f.name
         unversioned_name, = name.split("@")
+        next if unversioned_name == "openssl" && ignore_openssl_conflict
         # Allow use of the full versioned name (e.g. `[email protected]`) or an unversioned alias (`python`).
         next if formula.tap&.audit_exception :versioned_formula_dependent_conflicts_allowlist, name
         next if formula.tap&.audit_exception :versioned_formula_dependent_conflicts_allowlist, unversioned_name