use same php version for node_js tests only

ElectricMaxxx · ElectricMaxxx · commit a3e17273999f · 2018-06-13T23:20:45.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -31,11 +31,11 @@ env:
 
 matrix:
   include:
-    - php: 7.2
+    - php: 7.12
       dist: trusty
       node_js: 6
       env: LANG=js
-    - php: 7.0
+    - php: 7.1
       node_js: 7
       env: LANG=js
     - php: 7.1
