moved to trusty instead of precise

cbschuld · cbschuld · commit 4023958e21dd · 2020-04-06T09:44:32.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: php
 
-dist: precise
+dist: trusty
 
 php:
   - 7.4
