Changed log level for Error fetching sender from delete activity (#1646)

ref https://linear.app/ghost/issue/BER-3241

- We already see a 410 on the logs.

Author: rmgpinto

src/activity-handlers/delete.handler.ts

@@ -26,7 +26,7 @@ export class DeleteHandler {
         try {
             sender = await deleteActivity.getActor(ctx);
         } catch (error) {
-            ctx.data.logger.error(
+            ctx.data.logger.debug(
                 'Error fetching sender from delete activity',
                 { error },
             );