Add updateAllowedCombinations to AuthenticationStrengthPoliciesClient

[alexwilcox9]

It turns out you can't update the allowedCombinations field using the normal update endpoint. You'll get the following error

AuthenticationStrengthPoliciesClient.BaseClient.Patch(): unexpected status 405 with OData error: methodNotAllowed: Combinations can only be updated using updateAllowedCombinations action.: Combinations can only be updated
│ using updateAllowedCombinations action.

Instead there is a specific endpoint you must use documented here:
https://learn.microsoft.com/en-us/graph/api/authenticationstrengthpolicy-updateallowedcombinations?view=graph-rest-1.0&tabs=http

Currently I'm passing through the whole AuthenticationStrengthPolicy object but technically it should only be the allowedCombinations field without the display name etc.
If it's preferred I can create an object that only has allowedCombinations for use here but wasn't sure if that was needed given that Graph seems to ignore the extra fields

[manicminer]

Hi @alexwilcox9, thanks for this. I think we should build a new struct with the appropriate fields, since the API could at any time start throwing errors with the extra fields. We can still receive an AuthenticationStrengthPolicy as a method argument, and just pull out the ID and AllowedCombinations fileds. Other than that, this looks great 👍

[alexwilcox9]

Thanks for the feedback @manicminer, I've updated the code to create a new AuthenticationStrengthPolicy with only the allowedCombinations field set.

Is this sufficient or should I create a new struct in models.go for use here?

[manicminer]

@alexwilcox9 Sorry for the delay, I think this is fine to construct a request like this and we don't need to define a new exported struct type for it. Thanks for this!