message: Update migration description
diff: @@ -274,7 +274,7 @@ fn migrate_inner(version: Option<Version>, conn: &Connection, apply_mode: ApplyM
  // version
  7,
  // description
  - "Change sandbox_overrides's max_memory_bytes to BIGINT",
  + "Allow memory limits of more than 4 GB",
  // upgrade query
  "ALTER TABLE sandbox_overrides ALTER COLUMN max_memory_bytes TYPE BIGINT;",
  // downgrade query
  