fix: set relay to Montreal-based infra

playbook.yml

@@ -10,6 +10,7 @@
     pds_blob_upload_limit: 314572800
     pds_rate_limits_enabled: true
     pds_invite_required: true
+    pds_crawlers: https://relay.fire.hose.cam
     pds_backup_period: 24h
     pds_backup_s3_bucket: atprotopds-backup
     pds_backup_s3_region: bhs