update Codeception and phpunit, refs #81

composer.json

composer.lock

tests/_support/Helper/StudipDb.php

tests/_support/_generated/FunctionalTesterActions.php

tests/_support/_generated/JsonapiTesterActions.php

tests/_support/_generated/UnitTesterActions.php

tests/jsonapi/UserEventsIcalTest.php

tests/jsonapi/WikiCreateTest.php

tests/jsonapi/WikiIndexTest.php

tests/jsonapi/WikiShowTest.php

tests/jsonapi/WikiUpdateTest.php

tests/unit/_bootstrap.php

tests/unit/lib/CalendarcolumnClassTest.php

tests/unit/lib/CalendarviewClassTest.php

tests/unit/lib/VisualTest.php

tests/unit/lib/classes/AssetsClassTest.php

tests/unit/lib/classes/AvatarClassTest.php

tests/unit/lib/classes/CronjobScheduleTest.php

tests/unit/lib/classes/CsrfProtectionTest.php

tests/unit/lib/classes/IconClassTest.php