Bump MongoDB.Driver from 3.5.1 to 3.5.2 (#465)

---
updated-dependencies:
- dependency-name: MongoDB.Driver
  dependency-version: 3.5.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

Nu/Nu.csproj

@@ -6,7 +6,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="MongoDB.Driver" Version="3.5.1" />
+        <PackageReference Include="MongoDB.Driver" Version="3.5.2" />
         <PackageReference Include="MongoDB.Driver.Core.Extensions.DiagnosticSources" Version="2.1.0" />
         <PackageReference Include="MongoDB.Driver.Core.Extensions.OpenTelemetry" Version="1.0.0" />
     </ItemGroup>