Force travis dist trusty for JDK8 support

sadv1r · sadv1r · commit 76168ab3542d · 2021-06-05T08:00:11.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,3 +1,4 @@
+dist: trusty
 language: java
 sudo: false
 install: true
