Bump django from 5.2.3 to 5.2.7 in /requirements (#611)

Bumps [django](https://github.com/django/django) from 5.2.3 to 5.2.7.
- [Commits](django/django@5.2.3...5.2.7)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 5.2.7
  dependency-type: direct:production
...

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

Co-authored-by: SiHyunLee <antoliny0919@gmail.com>

Author: dependabot[bot]

requirements/base.txt

@@ -1,5 +1,5 @@
 bleach==6.2.0
-Django==5.2.3
+Django==5.2.7
 dj-database-url==3.0.0
 django-allauth==65.9.0
 django-contrib-comments==2.2.0