Update TodosApi app to use Dapper AOT

[eerhardt]

We should update

Benchmarks/src/BenchmarksApps/TodosApi/TodosApi.csproj

Line 18 in 8937602

<PackageReference Include="Nanorm.Npgsql" Version="0.1.2" />

To use https://github.com/DapperLib/DapperAOT/ instead. DapperAOT is more widely used. It would be better to get measurements using DapperAOT instead of Nanorm.

cc @DamianEdwards @mgravell