Prepare for 4.4.3 release #655

Job	Run time
CI test (make validate)	54s
Code coverage (codecov)	0s
Build moodle-plugin-ci.phar	27s
Integration tests (8.3, main)	6m 40s
Integration tests (8.2, MOODLE_403_STABLE)	5m 48s
Integration tests (8.2, MOODLE_402_STABLE)	5m 34s
Integration tests (8.1, MOODLE_401_STABLE)	6m 45s
Integration tests (8.0, MOODLE_400_STABLE)	6m 14s
Integration tests (8.0, MOODLE_311_STABLE)	6m 3s
Integration tests (7.4, MOODLE_39_STABLE)	5m 57s
SelfUpdate tests (PHAR) (8.3)	45s
SelfUpdate tests (PHAR) (8.2)	37s
Integration tests (PHAR) (8.3, main)	6m 11s
SelfUpdate tests (PHAR) (8.1)	38s
Integration tests (PHAR) (8.2, MOODLE_403_STABLE)	5m 47s
SelfUpdate tests (PHAR) (8.0)	22s
Integration tests (PHAR) (8.1, MOODLE_402_STABLE)	5m 12s
SelfUpdate tests (PHAR) (7.4)	20s
Integration tests (PHAR) (8.0, MOODLE_401_STABLE)	6m 45s
Integration tests (PHAR) (7.4, MOODLE_400_STABLE)	5m 31s
	1h 16m 30s

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