Stefanie Stoelting makes an announcement:
As PostgreSQL 12 is not supported anymore, it went out of support on November 21, 2024, it has been removed from the supported versions of pgsql_tweaks.
Click through for the major addition. And weep not for PostgreSQL 12, for it first came out in 2019. Instead, weep for all of the people still using the 9.x series.