Upgrade MongoDB.Driver to 3.8.1

Author: maliming

Directory.Packages.props

@@ -123,7 +123,7 @@
     <PackageVersion Include="Microsoft.IdentityModel.Tokens" Version="8.16.0" />
     <PackageVersion Include="Microsoft.IdentityModel.JsonWebTokens" Version="8.16.0" />
     <PackageVersion Include="Minio" Version="6.0.5" />
-    <PackageVersion Include="MongoDB.Driver" Version="3.8.0" />
+    <PackageVersion Include="MongoDB.Driver" Version="3.8.1" />
     <PackageVersion Include="NEST" Version="7.17.5" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageVersion Include="Nito.AsyncEx.Context" Version="5.1.2" />