receipt["cancellation_date"] != nil, always return .notPurchased

## Bug Report
when user buy a autoRenewable product ,the product has not expire, when user cancel the autoRenewable , the restore buy call verifySubscriptions() function always return .notPurchased

**To Reproduce**
Steps to reproduce the behavior:
1. Step one...

**Expected behavior**
A clear and concise description of what you expected to happen.

## Platform Information
- OS: [e.g. iOS 13.4, watchOS 6.2.1, tvOS 9.2.3, macOS 10.14.3, Catalyst 13.0]
- Purchase Type: [e.g. consumable, non-consumable, auto-renewable subscription, non-renewing subscription, discount]
- Environment: [e.g. sandbox, app review, production]
- SwiftyStoreKit version: [e.g. 0.16]

## Additional context
Add any other context about the problem here.

**Potentially Related Issues**
- Issue #___

**Screenshots**
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class func verifySubscriptions(
ofType type: SubscriptionType,
productIds: Set,
inReceipt receipt: ReceiptInfo,
validUntil date: Date = Date()
) -> VerifySubscriptionResult {

// The values of the latest_receipt and latest_receipt_info keys are useful when checking whether an auto-renewable subscription is currently active. By providing any transaction receipt for the subscription and checking these values, you can get information about the currently-active subscription period. If the receipt being validated is for the latest renewal, the value for latest_receipt is the same as receipt-data (in the request) and the value for latest_receipt_info is the same as receipt.
let (receipts, duration) = getReceiptsAndDuration(for: type, inReceipt: receipt)
let receiptsInfo = filterReceiptsInfo(receipts: receipts, withProductIds: productIds)
let nonCancelledReceiptsInfo = receiptsInfo.filter { receipt in receipt["cancellation_date"] == nil }
if nonCancelledReceiptsInfo.count == 0 {
return .notPurchased
}