https://www.postgresql.org/docs/release/15.0/https://www.postgresql.org/docs/release/15.1/
A dump/restore using pg_dumpall or use of pg_upgrade or logical
replication is required for those wishing to migrate data from any
previous release.
Do not backport to release branch which should remain on version 14.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
