Update pattern library urlpatterns for compatibility with Django 4.0

Author: thibaudcolas

pattern_library/urls.py

@@ -1,12 +1,12 @@
-from django.conf.urls import url
+from django.urls import re_path
 
 from pattern_library import get_pattern_template_suffix, views
 
 app_name = 'pattern_library'
 urlpatterns = [
     # UI
-    url(r'^$', views.IndexView.as_view(), name='index'),
-    url(
+    re_path(r'^$', views.IndexView.as_view(), name='index'),
+    re_path(
         r'^pattern/(?P<pattern_template_name>[\w./-]+%s)$' % (
             get_pattern_template_suffix()
         ),
@@ -15,7 +15,7 @@
     ),
 
     # iframe rendering
-    url(
+    re_path(
         r'^render-pattern/(?P<pattern_template_name>[\w./-]+%s)$' % (
             get_pattern_template_suffix()
         ),

tests/urls.py

@@ -1,13 +1,13 @@
 from django.conf import settings
-from django.conf.urls import include, url
+from django.urls import include, path
 
 from pattern_library import urls as pattern_library_urls
 
 if settings.GITHUB_PAGES_EXPORT:
     urlpatterns = [
-        url(r'^django-pattern-library/demo/pattern-library/', include(pattern_library_urls)),
+        path('django-pattern-library/demo/pattern-library/', include(pattern_library_urls)),
     ]
 else:
     urlpatterns = [
-        url(r'^pattern-library/', include(pattern_library_urls)),
+        path('pattern-library/', include(pattern_library_urls)),
     ]