fix(deps): bump MongoDB.Driver in /statistics server

Bumps [MongoDB.Driver](https://github.com/mongodb/mongo-csharp-driver) from 2.15.0 to 2.16.1.
- [Release notes](https://github.com/mongodb/mongo-csharp-driver/releases)
- [Commits](mongodb/mongo-csharp-driver@v2.15.0...v2.16.1)

---
updated-dependencies:
- dependency-name: MongoDB.Driver
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

statistics server/statistics server.csproj

@@ -20,7 +20,7 @@
         <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="6.0.4" />
         <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="6.0.1" />
         <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.15.0" />
-        <PackageReference Include="MongoDB.Driver" Version="2.15.0" />
+        <PackageReference Include="MongoDB.Driver" Version="2.16.1" />
     </ItemGroup>
 
     <ItemGroup>