[SM-412] Remove postgres timezone legacy behavior (#2547)

.config/dotnet-tools.json

@@ -21,10 +21,10 @@
       ]
     },
     "dotnet-ef": {
-      "version": "6.0.11",
+      "version": "6.0.12",
       "commands": [
         "dotnet-ef"
       ]
     }
   }
-}
+}

src/Infrastructure.EntityFramework/Repositories/DatabaseContext.cs

@@ -157,20 +157,10 @@ public class DatabaseContext : DbContext
             {
                 if (property.ClrType == typeof(DateTime) || property.ClrType == typeof(DateTime?))
                 {
-                    if (Database.IsNpgsql())
-                    {
-                        property.SetValueConverter(
-                            new ValueConverter<DateTime, DateTime>(
-                                v => v,
-                                v => v.ToUniversalTime()));
-                    }
-                    else
-                    {
-                        property.SetValueConverter(
-                            new ValueConverter<DateTime, DateTime>(
-                                v => v,
-                                v => new DateTime(v.Ticks, DateTimeKind.Utc)));
-                    }
+                    property.SetValueConverter(
+                        new ValueConverter<DateTime, DateTime>(
+                            v => v,
+                            v => new DateTime(v.Ticks, DateTimeKind.Utc)));
                 }
             }
         }

util/PostgresMigrations/Factories.cs

@@ -25,9 +25,6 @@ public class DatabaseContextFactory : IDesignTimeDbContextFactory<DatabaseContex
         var globalSettings = GlobalSettingsFactory.GlobalSettings;
         var optionsBuilder = new DbContextOptionsBuilder<DatabaseContext>();
         var connectionString = globalSettings.PostgreSql?.ConnectionString;
-        // NpgSql 6.0 changed how timezones works. We have not yet updated our projects to support this new behavior and need to fallback to the previous behavior.
-        // Check https://www.npgsql.org/doc/release-notes/6.0.html#timestamp-rationalization-and-improvements for more details.
-        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
         if (string.IsNullOrWhiteSpace(connectionString))
         {
             throw new Exception("No Postgres connection string found.");