Bump Django to 4.2.26 to agree with DAB changes (#16183)

Author: djyasin

requirements/requirements.in

@@ -13,7 +13,7 @@ cryptography
 Cython
 daphne
 distro
-django==4.2.21  # CVE-2025-32873
+django==4.2.26  # CVE-2025-32873
 django-cors-headers
 django-crum
 django-extensions

requirements/requirements.txt

@@ -124,7 +124,7 @@ dispatcherd==2025.5.21
     # via -r /awx_devel/requirements/requirements.in
 distro==1.9.0
     # via -r /awx_devel/requirements/requirements.in
-django==4.2.21
+django==4.2.26
     # via
     #   -r /awx_devel/requirements/requirements.in
     #   channels