Merge pull request #3169 from ccnmtl/dependabot/pip/django-treebeard-4.8.0

Bump django-treebeard from 4.7.1 to 4.8.0

Author: ndittren

requirements.txt

@@ -76,7 +76,7 @@ django-extensions==4.1
 django-stagingcontext==0.1.0
 django-ga-context==0.1.0
 django-impersonate==1.9.5
-django-treebeard==4.7.1
+django-treebeard==4.8.0
 django-pagetree==1.5.0
 django-pageblocks==1.3.0  # pyup: <2.0.0
 django-quizblock==1.3.2