[PATCH] travis: update dist to focal

[Alex Hung]

Signed-off-by: Alex Hung <alex.hung at canonical.com>
---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index debf0219..3317f3be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-dist: trusty
+dist: focal
 sudo: required
 
 before_install:
-- 
2.25.1