Bump travis Ubuntu from xenial(16.04) to bionic(18.04)

elichai · elichai · commit e7bfe3407087 · 2020-05-03T11:01:32.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -9,6 +9,7 @@ cache:
 before_cache:
   - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then brew cleanup; fi
 
+dist: bionic
 # Valgrind currently supports upto macOS 10.13, the latest xcode of that version is 10.1
 osx_image: xcode10.1
 addons:
