Pin Django to ~5.1 (#610)

5.2 demands postgres 14, and we pretend to be postgres 13.

Author: msullivan

pyproject.toml

@@ -39,7 +39,7 @@ test = [
 sqltest = [
     'SQLAlchemy>=2.0.0',
     'sqlmodel>=0.0.22',
-    'Django>=5.1.3',
+    'Django~=5.1.3',
     'psycopg2-binary>=2.9.10',
 ]
 doc = [