fix pfg_resources error

Author: avdata99

requirements.in

@@ -16,6 +16,11 @@ django-filer==3.4.4
 django-markdown-deux==1.0.6
 django-mptt==0.18.0
 django-pagedown==2.2.1
+# Pinned directly so we get a 4.x release that uses `importlib.metadata`
+# instead of the deprecated `pkg_resources`. django-filer pulls it in
+# transitively but doesn't pin a specific version, so without this we'd
+# resolve to an old 3.x release that breaks on Python 3.12.
+django-polymorphic==4.11.2
 django-reversion==5.1.0
 django-sekizai==4.1.0
 django-storages==1.14.6

requirements.txt

@@ -75,8 +75,10 @@ django-mptt==0.18.0
     # via -r requirements.in
 django-pagedown==2.2.1
     # via -r requirements.in
-django-polymorphic==3.1.0
-    # via django-filer
+django-polymorphic==4.11.2
+    # via
+    #   -r requirements.in
+    #   django-filer
 django-ranged-response==0.2.0
     # via django-simple-captcha
 django-reversion==5.1.0
@@ -215,6 +217,7 @@ typing-extensions==4.15.0
     #   -r requirements.in
     #   beautifulsoup4
     #   django-countries
+    #   django-polymorphic
 urllib3==2.6.3
     # via
     #   -r requirements.in