upd min php version

Author: makasim

.travis.yml

@@ -6,7 +6,7 @@ git:
 language: php
 
 php:
-    - '7.1'
+    - '7.2'
 
 cache:
     directories:

composer.json

@@ -5,7 +5,7 @@
     "description": "Job Time Scheduler App",
     "keywords": ["job", "time", "task", "time scheduler", "quartz", "chrono"],
     "require": {
-        "php": "^7.1.3",
+        "php": "^7.2",
         "symfony/console": "^3|^4",
         "symfony/flex": "^1.0",
         "symfony/framework-bundle": "^3|^4",