New SDL requirement: Enable deterministic builds

[GrabYourPitchforks]

A new SDL requirement recently came online requiring us to produce deterministic builds for our managed assemblies. This caused a bunch of alerts to light up across Arcade's internal repo health dashboard.

In theory this should be a simple matter of adding <Deterministic>true</Deterministic> to the shared .props file under our source directory.

More info:

• https://learn.microsoft.com/dotnet/csharp/language-reference/compiler-options/code-generation#deterministic
• https://aka.ms/liquid?share=17264 (MSFT internal)

Figured we could start in this repo and squash the alerts here, then track the binaries flowing to other repos and see if the alerts start disappearing.