fix: guard debug_toolbar import in urls.py

The DEBUG flag is True by default in base settings, but debug_toolbar
may not be installed (e.g. in CI). Guard the import to prevent
ModuleNotFoundError when running without dev extras.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: JacobCoffee

pydotorg/urls.py

@@ -73,6 +73,9 @@
 
 if settings.DEBUG:
     urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
-    import debug_toolbar
+    try:
+        import debug_toolbar
 
-    urlpatterns = [path("__debug__/", include(debug_toolbar.urls)), *urlpatterns]
+        urlpatterns = [path("__debug__/", include(debug_toolbar.urls)), *urlpatterns]
+    except ImportError:
+        pass