formula_auditor: add a version_scheme.

Co-authored-by: Rylan Polster <[email protected]>

Author: MikeMcQuaid

Library/Homebrew/formula_auditor.rb

@@ -1192,6 +1192,7 @@ def committed_version_info(formula: @formula)
             origin_head_version_info[:version]  ||= previous_version_info[:version]
             origin_head_version_info[:checksum] ||= previous_version_info[:checksum]
             origin_head_version_info[:revision] ||= previous_version_info[:revision]
+            origin_head_version_info[:version_scheme] ||= previous_version_info[:version_scheme]
             origin_head_version_info[:compatibility_version] ||= previous_version_info[:compatibility_version]
           end
         rescue MacOSVersion::Error