Added missing migration for shape type == Mask (#5376)

PR https://github.com/opencv/cvat/pull/4543 didn't add a new migration.
The migration wasn't critical. At least it was not led to any problems.

cvat/apps/engine/migrations/0061_auto_20221130_0844.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.2.16 on 2022-11-30 08:44
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('engine', '0060_alter_label_parent'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='labeledshape',
+            name='type',
+            field=models.CharField(choices=[('rectangle', 'RECTANGLE'), ('polygon', 'POLYGON'), ('polyline', 'POLYLINE'), ('points', 'POINTS'), ('ellipse', 'ELLIPSE'), ('cuboid', 'CUBOID'), ('mask', 'MASK'), ('skeleton', 'SKELETON')], max_length=16),
+        ),
+        migrations.AlterField(
+            model_name='trackedshape',
+            name='type',
+            field=models.CharField(choices=[('rectangle', 'RECTANGLE'), ('polygon', 'POLYGON'), ('polyline', 'POLYLINE'), ('points', 'POINTS'), ('ellipse', 'ELLIPSE'), ('cuboid', 'CUBOID'), ('mask', 'MASK'), ('skeleton', 'SKELETON')], max_length=16),
+        ),
+    ]