Pin django at v4.0; provide migration

Closes #59

django_basin3d/migrations/0002_alter_attributemapping_id_alter_datasource_id.py

@@ -0,0 +1,23 @@
+# Generated by Django 4.0 on 2023-10-13 20:19 by Hesham
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_basin3d', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='attributemapping',
+            name='id',
+            field=models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
+        ),
+        migrations.AlterField(
+            model_name='datasource',
+            name='id',
+            field=models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
+        ),
+    ]

pyproject.toml

@@ -36,7 +36,7 @@ readme = "README.md"
 requires-python = '>=3.8,<3.11'
 dependencies = [
     'basin3d==0.5.0',
-    'django>=4.0',
+    'django==4.0',
     'djangorestframework',
     'django-filter',
     'markdown',