svn commit: r80550 - release/arrow/apache-arrow-adbc-21

[lidavidm]

Author: lidavidm
Date: Fri Nov  7 01:41:02 2025
New Revision: 80550

Log:
Apache Arrow ADBC 21

Added:
   release/arrow/apache-arrow-adbc-21/
      - copied from r80549, dev/arrow/apache-arrow-adbc-21-rc0/