Just tried doing a Debian Bullseye XWiki LTS 14.10.18 upgrade to 14.10.19 and it reported “Inrelease”, thus nothing downloaded to be change or upgraded.
Using (and has been using for years):
deb [signed-by=/usr/share/keyrings/xwiki-keyring.gpg] http://maven.xwiki.org lts/
Did I miss something new?