fix(migrations): renumber purchase_history_revocation 000060 -> 000064

Base feat/multicloud-web-frontend now carries 000059_seed_purchaser_group
(merged via PR #941) and 000063_purchase_history_monthly_cost_nullable, so
the revocation migration must move above the highest base migration to keep
the sequence monotonic and avoid collisions on the merge ref. Move both the
up and down files to 000064 and update the in-code reference comment in
store_postgres.queryPurchaseHistory.

Author: cristim

internal/config/store_postgres.go

@@ -1540,7 +1540,7 @@ func (s *PostgresStore) GetPurchaseHistoryFiltered(
 //	estimated_savings, plan_id, plan_name, ramp_step, cloud_account_id,
 //	revocation_window_closes_at, revoked_at, revoked_via, support_case_id
 //
-// The revocation columns were added in migration 000060. Queries must
+// The revocation columns were added in migration 000064. Queries must
 // include them explicitly so the Scan targets stay in sync.
 func (s *PostgresStore) queryPurchaseHistory(ctx context.Context, query string, args ...any) ([]PurchaseHistoryRecord, error) {
 	rows, err := s.db.Query(ctx, query, args...)

…060_purchase_history_revocation.down.sql …064_purchase_history_revocation.down.sqlinternal/database/postgres/migrations/000060_purchase_history_revocation.down.sql renamed to internal/database/postgres/migrations/000064_purchase_history_revocation.down.sql internal/database/postgres/migrations/000060_purchase_history_revocation.down.sql renamed to internal/database/postgres/migrations/000064_purchase_history_revocation.down.sql

@@ -1,4 +1,4 @@
--- Rollback 000060: remove revocation columns from purchase_history
+-- Rollback 000064: remove revocation columns from purchase_history
 DROP INDEX IF EXISTS idx_purchase_history_revocation_window;
 
 ALTER TABLE purchase_history

…00060_purchase_history_revocation.up.sql …00064_purchase_history_revocation.up.sqlinternal/database/postgres/migrations/000060_purchase_history_revocation.up.sql renamed to internal/database/postgres/migrations/000064_purchase_history_revocation.up.sql internal/database/postgres/migrations/000060_purchase_history_revocation.up.sql renamed to internal/database/postgres/migrations/000064_purchase_history_revocation.up.sql

@@ -1,4 +1,4 @@
--- Migration 000060: add revocation columns to purchase_history
+-- Migration 000064: add revocation columns to purchase_history
 --
 -- AWS EC2 RIs: no direct cancel API; the 24h free-cancel window requires an
 -- AWS Support case (support:CreateCase). AWS support-case revocation is