re-order database migrations to prevent double heads

gso/migrations/versions/2023-09-22_6c986f219e3f_add_router_validation_task.py

 """Add router validation task.
 
 Revision ID: 6c986f219e3f
-Revises: f0764c6f392c
+Revises: 4ec89ab289c0
 Create Date: 2023-09-22 17:13:01.223133
 
 """
@@ -10,7 +10,7 @@ from alembic import op
 
 # revision identifiers, used by Alembic.
 revision = '6c986f219e3f'
-down_revision = 'f0764c6f392c'
+down_revision = '4ec89ab289c0'
 branch_labels = None
 depends_on = None