fix: 修复 WAF 规则组保存/绑定网站时报 of_waf_rule_group_bindings_pkey 冲突

internal/db/migrator/goose/postgres/202606200007_sync_of_waf_binding_sequence.sql

@@ -0,0 +1,8 @@
+-- +goose Up
+SELECT setval(
+    pg_get_serial_sequence('of_waf_rule_group_bindings', 'id'),
+    COALESCE((SELECT MAX(id) FROM of_waf_rule_group_bindings), 0)
+);
+
+-- +goose Down
+SELECT 1;