Merge pull request #71 from nextcloud/dependabot/composer/phpunit/phpunit-7.5.7

Bump phpunit/phpunit from 5.7.27 to 7.5.7

Author: rullzer

composer.json

@@ -10,7 +10,7 @@
     ],
     "require": {},
     "require-dev": {
-        "phpunit/phpunit": "^5.4"
+        "phpunit/phpunit": "^7.5"
     },
     "scripts": {
         "lint": "find . -name \\*.php -not -path './vendor/*' -exec php -l \"{}\" \\;"