title: Upgraded my project to .net 6 now I have time zone in EF Core with postgreSQL
body: <p>I juste upgraded my web api to .net6 using EFCore and NPGSQL (Postgres).
  I had to Set a Switch for my code to work:
  <code>AppContext.SetSwitch(&quot;Npgsql.EnableLegacyTimestampBehavior&quot;, true);</code></p>
  <p>Now EFCore Creates my DateTime fields to <em>'timestamp with time zone'</em> which breaks everything.</p>
  <p>How can I get the old <em>'timestamp without time zone'</em> for DateTime Types?</p>
  <p>Should I remove the LegacyTimestamp switch?</p>
  <p>Thanks for your help!</p>