fix: Data too long for column 'resource_id'

when the course id is a little bit long, the lti xblock id becomes too long for resource_id to handle

lti_consumer/migrations/0018_auto_20231225_0556.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.23 on 2023-12-25 10:56
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lti_consumer', '0017_lticonfiguration_lti_1p3_redirect_uris'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='ltiagslineitem',
+            name='resource_id',
+            field=models.CharField(blank=True, max_length=255),
+        ),
+    ]

lti_consumer/models.py

@@ -692,7 +692,7 @@ class LtiAgsLineItem(models.Model):
     )
 
     # Tool resource identifier, not used by the LMS.
-    resource_id = models.CharField(max_length=100, blank=True)
+    resource_id = models.CharField(max_length=255, blank=True)
 
     # LMS Resource link
     # Must be the same as the one sent in the tool's LTI launch.