Update endroid/qr-code to 4.6 #73

Job	Run time
call / setup_jobs	6s
call / static (8.3, MOODLE_405_STABLE, pgsql)	1m 16s
call / test (7.4, MOODLE_401_STABLE, pgsql)	3m 22s
call / test (8.1, MOODLE_401_STABLE, pgsql)	3m 27s
call / test (8.0, MOODLE_402_STABLE, pgsql)	2m 59s
call / test (8.2, MOODLE_402_STABLE, pgsql)	3m 11s
call / test (8.0, MOODLE_403_STABLE, pgsql)	2m 58s
call / test (8.2, MOODLE_403_STABLE, pgsql)	2m 57s
call / test (8.1, MOODLE_404_STABLE, pgsql)	2m 56s
call / test (8.3, MOODLE_404_STABLE, pgsql)	3m 2s
call / test (8.1, MOODLE_405_STABLE, pgsql)	3m 8s
call / test (8.2, MOODLE_405_STABLE, pgsql)	3m 3s
call / test (8.3, MOODLE_405_STABLE, pgsql)	3m 1s
call / test (8.3, MOODLE_405_STABLE, mariadb)	2m 59s
call / test (8.3, MOODLE_405_STABLE, mysqli)	3m 24s
	41m 49s

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