Use our phpstan in the CI #1836

Job	Run time
Composer validation	10s
Composer validation	10s
Coding Standards	18s
Coding Standards	18s
PHPUnit on 8.1 / Castor from bin/castor	1m 33s
PHPUnit on 8.1 / Castor from bin/castor	1m 10s
Ensure artifacts are OK	49s
Ensure artifacts are OK	49s
Static Analysis	21s
Static Analysis	21s
PHPUnit on 8.1 / Castor from phar	1m 20s
PHPUnit on 8.1 / Castor from phar	1m 20s
PHPUnit on 8.1 / Castor from static	1m 41s
PHPUnit on 8.1 / Castor from static	1m 41s
PHPUnit on 8.2 / Castor from bin/castor	1m 10s
PHPUnit on 8.2 / Castor from bin/castor	1m 10s
PHPUnit on 8.3 / Castor from bin/castor	1m 10s
PHPUnit on 8.3 / Castor from bin/castor	1m 10s
PHPUnit on 8.4 / Castor from bin/castor	1m 24s
PHPUnit on 8.4 / Castor from bin/castor	1m 24s
	19m 29s

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