fix: use django 4.2.26

Author: thomasrockhu-codecov

pyproject.toml

@@ -28,7 +28,7 @@ shared = [
     "django-model-utils>=4.5.1",
     "django-postgres-extra>=2.0.8",
     "django-prometheus>=2.3.1",
-    "django>=4.2.26,<5.0.0",
+    "django=4.2.26,<5.0.0",
     "google-auth>=2.21.1",
     "google-cloud-pubsub>=2.27.1",
     "httpx>=0.23.1",