Fixed conflicting migration error (microsoft#147)

Author: jmah8

testapp/migrations/0020_timezone.py renamed to testapp/migrations/0022_timezone.py

@@ -1,4 +1,4 @@
-# Generated by Django 4.0.4 on 2022-05-18 20:55
+# Generated by Django 4.0.4 on 2022-06-07 15:37
 
 from django.db import migrations, models
 import django.utils.timezone
@@ -7,7 +7,7 @@
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('testapp', '0019_customer_name_customer_address'),
+        ('testapp', '0021_multiple_autofield_to_bigauto'),
     ]
 
     operations = [