Bump Tinkoff.InvestApi from 0.6.1 to 0.6.4

Bumps [Tinkoff.InvestApi](https://github.com/RussianInvestments/invest-api-csharp-sdk) from 0.6.1 to 0.6.4.
- [Commits](https://github.com/RussianInvestments/invest-api-csharp-sdk/commits)

---
updated-dependencies:
- dependency-name: Tinkoff.InvestApi
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

csharp/TraderBot/TraderBot.csproj

@@ -11,7 +11,7 @@
         <PackageReference Include="GraphQL.Client.Serializer.Newtonsoft" Version="6.0.0" />
         <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.1" />
         <PackageReference Include="Platform.Data.Doublets.Sequences" Version="0.1.1" />
-        <PackageReference Include="Tinkoff.InvestApi" Version="0.6.1" />
+        <PackageReference Include="Tinkoff.InvestApi" Version="0.6.4" />
     </ItemGroup>
 
 </Project>