Deprecate the phpdbg option for code coverage #643

Job	Run time
Code coverage (codecov)	1m 3s
CI test (make validate)	1m 6s
Integration tests (8.3, main)	6m 34s
Integration tests (8.2, MOODLE_403_STABLE)	6m 37s
Build moodle-plugin-ci.phar	28s
Integration tests (8.2, MOODLE_402_STABLE)	5m 42s
Integration tests (8.1, MOODLE_401_STABLE)	6m 49s
Integration tests (8.0, MOODLE_400_STABLE)	6m 44s
Integration tests (8.0, MOODLE_311_STABLE)	6m 0s
Integration tests (7.4, MOODLE_39_STABLE)	6m 13s
Integration tests (PHAR) (8.3, main)	6m 6s
SelfUpdate tests (PHAR) (8.3)	33s
Integration tests (PHAR) (8.2, MOODLE_403_STABLE)	5m 40s
SelfUpdate tests (PHAR) (8.2)	25s
Integration tests (PHAR) (8.1, MOODLE_402_STABLE)	5m 51s
SelfUpdate tests (PHAR) (8.1)	36s
Integration tests (PHAR) (8.0, MOODLE_401_STABLE)	6m 16s
SelfUpdate tests (PHAR) (8.0)	29s
Integration tests (PHAR) (7.4, MOODLE_400_STABLE)	5m 38s
SelfUpdate tests (PHAR) (7.4)	14s
	1h 19m 4s

Provide feedback