PHRAS-4130 : upgrade mariadb to 5.11.11 (#4586) #1177

Job	Run time
build phraseanet-nginx / build	29s
build phraseanet-elasticsearch / build	23s
build phraseanet-db / build	25s
build phraseanet-setup / build	30s
build phraseanet-worker / build	32s
build phraseanet-fpm / build	33s
unit test	2m 24s
	5m 16s

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