Upgrade to a later version of the Storage SDK for DurableTask.AzureStorage

We currently use v9.3.1 of the Azure Storage SDK, which is very out of date and is no longer maintained.

Upgrading to later versions of the SDK should allow us to get bug-fixes for issues like the deadlock we get that has caused many issues for us historically, as well as get us new features and support for key vault integration, as well as hopefully performance improvements.

Ideally, due to the structure of the Azure Storage team updating the namespaces of their types across major versions, we may be able to accomplish this as a non-breaking change, at least for Durable Functions.