Update .travis.yml

Author: Andrey Helldar

.travis.yml

@@ -31,7 +31,7 @@ before_install:
 install:
     - if [[ $SETUP = 'stable' ]]; then travis_retry composer update --prefer-dist --no-interaction --prefer-stable --no-suggest; fi
     - if [[ $SETUP = 'lowest' ]]; then travis_retry composer update --prefer-dist --no-interaction --prefer-lowest --prefer-stable --no-suggest; fi
-    - if [[ $SETUP = 'lint' ]]; then travis_retry composer update --prefer-dist --no-interaction --prefer-stable --no-suggest; travis_retry composer lint; fi
+    - if [[ $SETUP = 'lint' ]]; then travis_retry composer update --prefer-dist --no-interaction --prefer-stable --no-suggest; travis_retry vendor/bin/phpstan; fi
 
 script:
     - vendor/bin/phpunit