Upgrade ComputeFleet library

As part of the work to address https://github.com/Azure/azure-sdk-for-net/issues/52974, ComputeFleet was not upgraded due to build failures. Here is the [commit](https://github.com/Azure/azure-sdk-for-net/pull/52975/commits/437dd84446d86aed280acce3796553422358cb6f) where the upgrade was reverted. This issue tracks the work to upgrade the library.