Bump various dependencies #506

Job	Run time
CI test (make validate)	36s
Code coverage (codecov)	36s
Build moodle-plugin-ci.phar	1m 1s
Integration tests (8.2, master)	11m 5s
Integration tests (8.2, MOODLE_403_STABLE)	8m 12s
Integration tests (8.2, MOODLE_402_STABLE)	7m 37s
Integration tests (8.1, MOODLE_401_STABLE)	8m 43s
Integration tests (8.0, MOODLE_400_STABLE)	11m 26s
Integration tests (8.0, MOODLE_311_STABLE)	7m 26s
Integration tests (7.4, MOODLE_310_STABLE)	5m 59s
Integration tests (7.4, MOODLE_39_STABLE)	7m 16s
Integration tests (7.4, MOODLE_38_STABLE)	6m 29s
Integration tests (PHAR) (8.2, master)	7m 48s
Integration tests (PHAR) (8.1, MOODLE_403_STABLE)	7m 54s
Integration tests (PHAR) (8.0, MOODLE_401_STABLE)	6m 52s
Integration tests (PHAR) (7.4, MOODLE_400_STABLE)	9m 1s
	1h 48m 1s

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