15.8.1.057

feat: reland vault w/o pgsodium (#1452)

* Reapply "feat: vault sans pgsodium"

This reverts commit 447f4492258babcc57ca0307588814016835d24e.

* chore: update schema snapshots

* chore: print regress diffs for easier debugging

* chore: remove pgsodium priv checks

* fix: move it out of if else

* chore: bump version

* chore: bump version