synapse/changelog.d/11230.bugfix

Fix a long-standing bug wherein display names or avatar URLs containing null bytes cause an internal server error
when stored in the DB.
Change display names/avatar URLs to None if they contain null bytes before storing in DB (#11230) * change display names/avatar URLS to None if they contain null bytes * add changelog * add POC test, requested changes * add a saner test and remove old one * update test to verify that display name has been changed to None * make test less fragile 2021-11-12 19:38:24 +01:00			`Fix a long-standing bug wherein display names or avatar URLs containing null bytes cause an internal server error`
			`when stored in the DB.`