Update rest-social-auth requirement from <7.0,>=6.0.0 to >=6.0.0,<9.0 (…

…#915)

Updates the requirements on [rest-social-auth](https://github.com/st4lk/django-rest-social-auth) to permit the latest version.
- [Release notes](https://github.com/st4lk/django-rest-social-auth/releases)
- [Changelog](https://github.com/st4lk/django-rest-social-auth/blob/master/RELEASE_NOTES.md)
- [Commits](st4lk/django-rest-social-auth@v6.0.0...v8.0.0)

---
updated-dependencies:
- dependency-name: rest-social-auth
  dependency-type: direct:production
...

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

requirements.txt

@@ -21,7 +21,7 @@ PyGithub>=1.54.1,<2.0
 pypika>=0.48.1,<1.0
 python-dateutil>=2.8.0,<3.0
 pytz>=2019.1,<2024.0
-rest-social-auth>=6.0.0,<7.0
+rest-social-auth>=6.0.0,<9.0
 six>=1.12.0,<2.0
 soupsieve>=1.9,<2.0
 SQLAlchemy>=1.3.2,<2.0