Update deprecated syntax

Author: WhyNotHugo

django_renderpdf/helpers.py

@@ -1,6 +1,5 @@
 import mimetypes
 from typing import IO
-from typing import List
 from typing import Optional
 from typing import Union
 
@@ -93,7 +92,7 @@ def django_url_fetcher(url: str):
 
 
 def render_pdf(
-    template: Union[List[str], str],
+    template: Union[list[str], str],
     file_: IO,
     url_fetcher=django_url_fetcher,
     context: Optional[dict] = None,

django_renderpdf/views.py

@@ -1,4 +1,3 @@
-from typing import List
 from typing import Optional
 
 from django.core.exceptions import ImproperlyConfigured
@@ -103,7 +102,7 @@ def get_download_name(self) -> str:
             )
         return self.download_name
 
-    def get_template_names(self) -> List[str]:
+    def get_template_names(self) -> list[str]:
         """Return a list of template names to be used for the request.
 
         Must return a list. By default, just returns ``[self.template_name]``.