Update .travis.yml

sergiy-petrov · web-flow · commit 5d678f65b9d9 · 2020-02-19T19:03:34.000+02:00
php7.4 is already released, so I've removed snapshot prefix
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,7 @@ php:
   - 5.6
   - 7.1
   - 7.2
-  - 7.4snapshot
+  - 7.4
 branches:
   only:
     master
