require dev-master geshi for PHP7.2

Author: Schlaefer

composer.json

@@ -16,7 +16,7 @@
   ],
   "require": {
     "phile-cms/phile": "^1.10 || dev-develop",
-    "geshi/geshi": "v1.0.9.0"
+    "geshi/geshi": "dev-master"
   },
   "require-dev": {
     "phpunit/phpunit": "^7.0"