build(deps): bump Npgsql from 7.0.4 to 8.0.3 in /test_runner/pg_clients/csharp/npgsql in the nuget group across 1 directory

build(deps): bump Npgsql from 7.0.4 to 8.0.3 in /test_runner/pg_clients/csharp/npgsql in the nuget group across 1 directory #9