Replace Fank with with Dwd and Fishbowler as maintainer of Dockerfile #3487

Job	Run time
Build Openfire from source (17, zulu)	25m 35s
Build Openfire from source (21, zulu)	28m 54s
check_branch	1s
Check if database upgrade tests should be run	5s
Build (and maybe push) Docker image	8m 29s
Execute Connectivity CI tests	29s
Test Postgres Upgrades	1m 14s
Generate DEB artifact	3m 19s
Execute aioxmpp-based CI tests	1m 46s
Execute Smack-based CI tests	1m 3s
Test SQL Server Upgrades	1m 6s
Test MySQL Upgrades	1m 3s
Check if Docker Hub secrets exist	1s
Publish to Maven	2m 50s
Publish to Docker Hub	0s
Test tagged images published to Docker Hub	0s
	1h 15m 55s

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