Remove unsafe Swift code from OTP code generation

[emiliopavia]

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Description

On iOS 16 we're receiving several exceptions from the code(counter:) function in OneTimePasswordGenerator. The exception is related to the block called in the withUnsafeBytes function.

This PR aims to replace the code without using unsafe pointers (as suggested by Apple in Swift support forums).

References

• https://forums.swift.org/t/on-properly-aligned-pointer-for-types-pointee-and-t/61325/3

Testing

The code is already covered by tests.

• [ ] This change adds test coverage for new/changed/fixed functionality

Checklist

• [x] I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• [x] All active GitHub checks for tests, formatting, and security are passing
• [x] The correct base branch is being used, if not the default branch

[ObidosDev]

Any update on this? Looks like this code produce error Fatal error: self must be a properly aligned pointer for types Pointee and T on line let value = start.withMemoryRebound(to: UInt32.self, capacity: 1) { $0 } This PR may fix it :)

[ObidosDev]

@Widcket may you take a look?

[Widcket]

Hi @emiliopavia and @ObidosDev, thanks for raising this. However, I'm not the maintainer of this library –I'll defer to @ionutmanolache-okta.

[ObidosDev]

Any update on this? This is kinda huge problem for now

[ObidosDev]

Updates?)