Fix Dependabot

Author: andyleejordan

.github/dependabot.yml

@@ -1,7 +1,15 @@
 version: 2
+registries:
+nuget-azure:
+type: nuget-feed
+url: https://pkgs.dev.azure.com/mscodehub/PowerShellCore/_packaging/PowerShellCore_PublicPackages/nuget/v3/index.json
+username: powershell-rel
+password: ${{secrets.AZURE_NUGET_TOKEN }}
 updates:
 - package-ecosystem: nuget
 directory: "/"
+registries:
+ - nuget-azure
 labels: [ ]
 schedule:
 interval: weekly