Rename migration file

This renames the latest migration file to match the Revision ID in the
file. When these names are different, our deployment pipeline tries to
run migrations on the notify-api-db-migration app and runs the
functional tests twice.

migrations/versions/0373_add_notifications_view.py

@@ -0,0 +1,78 @@
+"""
+
+Revision ID: 0373_add_notifications_view
+Revises: 0372_remove_provider_rates
+Create Date: 2022-05-18 09:39:45.260951
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+revision = '0373_add_notifications_view'
+down_revision = '0372_remove_provider_rates'
+
+
+def upgrade():
+    op.execute("""
+        CREATE VIEW notifications_all_time_view AS
+        (
+            SELECT
+                id,
+                job_id,
+                job_row_number,
+                service_id,
+                template_id,
+                template_version,
+                api_key_id,
+                key_type,
+                billable_units,
+                notification_type,
+                created_at,
+                sent_at,
+                sent_by,
+                updated_at,
+                notification_status,
+                reference,
+                client_reference,
+                international,
+                phone_prefix,
+                rate_multiplier,
+                created_by_id,
+                postage,
+                document_download_count
+            FROM notifications
+        ) UNION
+        (
+            SELECT
+                id,
+                job_id,
+                job_row_number,
+                service_id,
+                template_id,
+                template_version,
+                api_key_id,
+                key_type,
+                billable_units,
+                notification_type,
+                created_at,
+                sent_at,
+                sent_by,
+                updated_at,
+                notification_status,
+                reference,
+                client_reference,
+                international,
+                phone_prefix,
+                rate_multiplier,
+                created_by_id,
+                postage,
+                document_download_count
+            FROM notification_history
+        )
+    """)
+
+
+def downgrade():
+    op.execute("DROP VIEW notifications_all_time_view")