REL_17_7
Prevent access to external files/URLs via contrib/xml2's xslt_process().
Support "make check" in contrib
Remove support for upgrading extensions from "unpackaged" state.
Update copyright for 2024
Update xml2 extension for parallel query.
Fix incompatibility with libxml2 >= 2.14
Revert "Add support for parsing of large XML data (>= 10MB)"