merge: fix(BE): Set serverRules to text (!1209)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/1209

Approved-by: dakkar <dakkar@thenautilus.net>
Approved-by: Hazelnoot <acomputerdog@gmail.com>

packages/backend/src/models/Meta.ts

@@ -633,8 +633,7 @@ export class MiMeta {
 	})
 	public policies: Record<string, any>;
 
-	@Column('varchar', {
-		length: 280,
+	@Column('text', {
 		array: true,
 		default: '{}',
 	})