chore(deps): update dependency django to v5.2.15 (#3878)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

requirements.txt

@@ -1,7 +1,7 @@
 certifi==2026.5.20
 cryptography==48.0.0
 defusedxml==0.7.1
-Django==5.2.14
+Django==5.2.15
 django-appconf==1.2.0
 django-compressor==4.6.0
 django-countries==8.2.0