chore(deps): update dependency stripe/stripe-ios to from: "23.21.2" (#901)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [stripe/stripe-ios](https://togithub.com/stripe/stripe-ios) | patch |
`from: "23.21.1"` -> `from: "23.21.2"` |

---

### Release Notes

<details>
<summary>stripe/stripe-ios (stripe/stripe-ios)</summary>

###
[`v23.21.2`](https://togithub.com/stripe/stripe-ios/blob/HEAD/CHANGELOG.md#23212-2024-02-05)

[Compare
Source](https://togithub.com/stripe/stripe-ios/compare/23.21.1...23.21.2)

##### Payments

- \[Changed] We now auto append `mandate_data` when using Klarna with a
SetupIntent. If you are interested in using Klarna with SetupIntents you
sign up for the beta
[here](https://stripe.com/docs/payments/klarna/accept-a-payment).

</details>

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