build(deps-dev): bump django-debug-toolbar in /backend (#1337)

Bumps [django-debug-toolbar](https://github.com/jazzband/django-debug-toolbar) from 3.6.0 to 3.7.0.
- [Release notes](https://github.com/jazzband/django-debug-toolbar/releases)
- [Changelog](https://github.com/jazzband/django-debug-toolbar/blob/main/docs/changes.rst)
- [Commits](django-commons/django-debug-toolbar@3.6...3.7)

---
updated-dependencies:
- dependency-name: django-debug-toolbar
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/requirements-dev.txt

@@ -1,2 +1,2 @@
-django-debug-toolbar==3.6.0
+django-debug-toolbar==3.7.0
 pre-commit==2.20.0