refactor: migrate to typeorm 3.0 (#8443)

* wip

* wip

* wip

* Update following.ts

* wip

* wip

* wip

* Update resolve-user.ts

* maxQueryExecutionTime

* wip

* wip

packages/backend/src/server/api/endpoints/federation/show-instance.ts

@@ -28,7 +28,7 @@ export const paramDef = {
 // eslint-disable-next-line import/no-default-export
 export default define(meta, paramDef, async (ps, me) => {
 	const instance = await Instances
-		.findOne({ host: toPuny(ps.host) });
+		.findOneBy({ host: toPuny(ps.host) });
 
 	return instance ? await Instances.pack(instance) : null;
 });