upgrade to pg16 #424

Job	Run time
Build docker image for 12-3.4 variant default	1m 11s
Build docker image for 12-3.4 variant alpine	4m 9s
Build docker image for 13-3.4 variant default	56s
Build docker image for 13-3.4 variant alpine	4m 11s
Build docker image for 14-3.4 variant default	57s
Build docker image for 14-3.4 variant alpine	4m 13s
Build docker image for 15-3.4 variant default	1m 0s
Build docker image for 15-3.4 variant alpine	5m 20s
Build docker image for 16-3.4 variant default	1m 8s
Build docker image for 16-3.4 variant alpine	4m 9s
Build docker image for 15-master variant default	31m 47s
Build docker image for 16-master variant default	31m 29s
Build docker image for 11-3.3 variant default	1m 14s
Build docker image for 11-3.3 variant alpine	3m 58s
	1h 35m 42s

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