Preannounce removal of *.deps.json files in Az modules (#2637)

docs-conceptual/azps-10.1.0/upcoming-breaking-changes.md

@@ -10,6 +10,18 @@ title: Upcoming breaking changes in Azure PowerShell
 
 # Upcoming breaking changes in Azure PowerShell
 
+## General
+
+Beginning with Az version 10.2, Azure PowerShell will no longer include the `*.deps.json` files in
+the modules' binary because of two major reasons:
+
+1. The purpose of `*.deps.json` files is to
+   [guide the default probing of .NET](/dotnet/core/dependency-loading/default-probing#how-are-the-properties-populated).
+   However, Azure PowerShell never utilized that feature.
+1. Some code scanning tools rely on `*.deps.json` files to scan for outdated dependencies, but the
+   files are not accurate enough because they describe the assemblies that Azure PowerShell requires
+   rather than what it's shipped with. This inaccuracy caused many false positives to be reported.
+
 ## Az.Aks
 
 ### `New-AzAksCluster`