Bump django-model-utils from 4.5.1 to 5.0.0 in /backend (#4250)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

backend/pyproject.toml

@@ -46,7 +46,7 @@ requires-python = "<3.13,>=3.11"
 dependencies = [
     "django==5.1.4",
     "django-environ==0.10.0",
-    "django-model-utils==4.5.1",
+    "django-model-utils==5.0.0",
     "django-timezone-field==7.0",
     "certifi==2024.7.4",
     "chardet==5.2.0",