Merge pull request #146 from luisa-beerboom/121-public-mediafiles #86

Job	Run time
Create PR for dependant services (openslides-autoupdate-service, ostcar, setup-autoupdate-pr) / Create or update PR	51s
Create PR for dependant services (openslides-backend, r-peschke) / Create or update PR	12s
Create PR for dependant services (openslides-client, bastianjoel) / Create or update PR	15s
Create PR for dependant services (openslides-search-service, bastianjoel) / Create or update PR	11s
	1m 29s

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