Use normal dialect-split upgrade

as there are no foreign keys referencing signalmeow_contacts

pkg/signalmeow/store/upgrades/00-latest.sql

@@ -1,4 +1,4 @@
--- v0 -> v9: Latest revision
+-- v0 -> v8: Latest revision
 CREATE TABLE signalmeow_device (
     aci_uuid              TEXT PRIMARY KEY,
 

pkg/signalmeow/store/upgrades/08-resync-schema-449-postgres.sql → pkg/signalmeow/store/upgrades/08-resync-schema-449.postgres.sql

@@ -1,6 +1,4 @@
--- v7 -> v8: Migration from https://github.com/mautrix/signal/pull/449 to match the new v8 upgrade (Postgres)
--- only: postgres
-
+-- v7 -> v8: Migration from https://github.com/mautrix/signal/pull/449 to match the new v8 upgrade
 ALTER TABLE signalmeow_contacts DROP COLUMN profile_avatar_hash;
 ALTER TABLE signalmeow_contacts RENAME COLUMN profile_fetch_ts TO profile_fetched_at;
 ALTER TABLE signalmeow_contacts ALTER COLUMN profile_fetched_at DROP DEFAULT;

pkg/signalmeow/store/upgrades/09-resync-schema-449-sqlite.sql → pkg/signalmeow/store/upgrades/08-resync-schema-449.sqlite.sql

@@ -1,13 +1,4 @@
--- v9: Migration from https://github.com/mautrix/signal/pull/449 to match the new v8 upgrade (SQLite)
--- transaction: off
--- only: sqlite
-
--- This is separate from v8 so that postgres can run with transaction: on
--- (split upgrades by dialect don't currently allow disabling transaction in only one dialect)
-
-PRAGMA foreign_keys = OFF;
-BEGIN;
-
+-- v7 -> v8: Migration from https://github.com/mautrix/signal/pull/449 to match the new v8 upgrade
 ALTER TABLE signalmeow_contacts DROP COLUMN profile_avatar_hash;
 
 CREATE TABLE signalmeow_contacts_new (
@@ -43,7 +34,3 @@ FROM signalmeow_contacts;
 
 DROP TABLE signalmeow_contacts;
 ALTER TABLE signalmeow_contacts_new RENAME TO signalmeow_contacts;
-
-PRAGMA foreign_key_check;
-COMMIT;
-PRAGMA foreign_keys = ON;