Bump Microsoft.Graph from 5.63.0 to 5.64.0 in /GraphSampleFunctions

Bumps [Microsoft.Graph](https://github.com/microsoftgraph/msgraph-sdk-dotnet) from 5.63.0 to 5.64.0.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-dotnet/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-dotnet/blob/main/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-dotnet@5.63.0...5.64.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

GraphSampleFunctions/GraphSampleFunctions.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.18.1" OutputItemType="Analyzer" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.23.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="7.0.0" />
-    <PackageReference Include="Microsoft.Graph" Version="5.63.0" />
+    <PackageReference Include="Microsoft.Graph" Version="5.64.0" />
   </ItemGroup>
   <ItemGroup>
     <None Update="host.json">