Add SQL Server datetime type variants to type handling

Adds DATETIME, DATETIME2, SMALLDATETIME, and DATETIMEOFFSET cases to
the TIMESTAMP branch so SQL Server datetime columns are handled correctly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

jrunner/src/main/java/jrunner/jrunner.java

@@ -363,6 +363,10 @@ public class jrunner {
                             nc = "'" + nc + "'";
                             break;
                         case "TIMESTAMP":
+                        case "DATETIME":
+                        case "DATETIME2":
+                        case "SMALLDATETIME":
+                        case "DATETIMEOFFSET":
                             nc = rs.getString(i);
                             if (rs.wasNull() || nc == null) {
                                 nc = "NULL";