Bump django-treebeard from 4.7 to 4.7.1

Bumps [django-treebeard](https://github.com/django-treebeard/django-treebeard) from 4.7 to 4.7.1.
- [Changelog](https://github.com/django-treebeard/django-treebeard/blob/master/CHANGES.md)
- [Commits](django-treebeard/django-treebeard@4.7...4.7.1)

---
updated-dependencies:
- dependency-name: django-treebeard
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -38,7 +38,7 @@ django-taggit==1.5.1
 django-markdownify==0.9.3
 django-mptt==0.15.0
 django-modeltranslation>=0.11,<0.19.0
-django-treebeard==4.7
+django-treebeard==4.7.1
 django-guardian<2.4.1
 django-downloadview==2.3.0
 django-polymorphic==3.1.0