Hi,
SUSE Linux Enterprise Server 15 SP3 leaves its regular maintenance and
support phase on December 31st 2022.
As openSUSE Leap 15.3 uses the SLES 15 SP3 updates, also openSUSE Leap
15.3 support from openSUSE Maintenance and Security will end on December 31st 2022.
An upgrade to openSUSE Leap 15.4 is recommended.
Ciao, Marcus