Fix accumulating headers in Celery#2985

antonpirker wants to merge 2 commits intosentry-sdk-2.0getsentry/sentry-python:sentry-sdk-2.0from

antonpirker/fix-accumulating-headers-in-celerygetsentry/sentry-python:antonpirker/fix-accumulating-headers-in-celeryCopy head branch name to clipboard