Bump Microsoft.Graph from 5.15.0 to 5.16.0 (#155)

Bumps [Microsoft.Graph](https://github.com/microsoftgraph/msgraph-sdk-dotnet) from 5.15.0 to 5.16.0.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-dotnet/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-dotnet/blob/dev/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-dotnet@5.15.0...5.16.0)

---
updated-dependencies:
- dependency-name: Microsoft.Graph
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

AzureADIntegrator/AzureADIntegrator.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.Graph" Version="5.15.0" />
+      <PackageReference Include="Microsoft.Graph" Version="5.16.0" />
     </ItemGroup>
 
 </Project>