This update for postgresql13 fixes the following issues:

- Upgrade to version 13.3:
- CVE-2021-32027: Fixed integer overflows in array subscripting calculations (bsc#1185924).
- CVE-2021-32028: Fixed mishandling of junk columns in INSERT ... ON CONFLICT ... UPDATE target lists (bsc#1185925).
- CVE-2021-32029: Fixed possibly-incorrect computation of UPDATE ... RETURNING outputs for joined cross-partition updates (bsc#1185926).

- Don't use %_stop_on_removal, because it was meant to be private and got removed from openSUSE. %_restart_on_update is also private, but still supported and needed for now (bsc#1183168).
- Re-enable build of the llvmjit subpackage on SLE, but it will only be delivered on PackageHub for now (bsc#1183118).
- Disable icu for PostgreSQL 10 (and older) on TW (bsc#1179945).