Used xenial for Travis builds.

felixxm · felixxm · commit a4e52c70b4b8 · 2021-03-10T10:39:46.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 sudo: required
-dist: trusty
+dist: xenial
 services:
 - docker
 python: 3.6
