[Tf-openci] [Maintenance] - urgent downtime for all Jenkins servers today 2024-01-29

Greetings All,

The Jenkins servers on ci-staging.trustedfirmware ci.trustedfirmware.org and mbedtls.trustedfirmware.org will all be put into safe mode in a few moments in preparation for a shutdown around 6pm UTC today.

The purpose of this is to perform an upgrade to the server to address a critical CVE discovered for the version of Jenkins running on all servers.

Regards,