make workflow.commit_id field larger

atdb/taskdatabase/migrations/0020_auto_20230327_1029.py

+# Generated by Django 3.1.4 on 2023-03-27 08:29
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('taskdatabase', '0019_task_archive'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='workflow',
+            name='commit_id',
+            field=models.CharField(blank=True, max_length=100, null=True),
+        ),
+    ]