Bump Azure.Identity in /src/app/AlwaysOn.BackgroundProcessor (#1466)

Bumps [Azure.Identity](https://github.com/Azure/azure-sdk-for-net) from 1.11.3 to 1.12.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.Identity_1.11.3...Azure.Identity_1.12.0)

---
updated-dependencies:
- dependency-name: Azure.Identity
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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src/app/AlwaysOn.BackgroundProcessor/AlwaysOn.BackgroundProcessor.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Data.Tables" Version="12.8.3" />
-    <PackageReference Include="Azure.Identity" Version="1.11.3" />
+    <PackageReference Include="Azure.Identity" Version="1.12.0" />
     <PackageReference Include="Azure.Messaging.EventHubs.Processor" Version="5.11.3" />
     <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.22.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />