Add photo_small to participants (#4413) #3242

Job	Run time
Check frontend needs building	15s
Check backend needs building	7s
Check pretix needs building	12s
Build backend / Build	5m 56s
Build pretix	0s
Deploy backend	43s
Wait backend deployment	1m 9s
Build frontend	0s
Deploy frontend	41s
Wait frontend deployment	8s
	9m 11s

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