fix: fix posted_at_null migrations

apps/fyle/migrations/0005_expense_is_posted_at_null.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.2 on 2024-11-26 06:36
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fyle', '0004_remove_expense_settlement_id'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='expense',
+            name='is_posted_at_null',
+            field=models.BooleanField(default=False, help_text='Flag check if posted at is null or not'),
+        ),
+    ]