Update Travis CI Ubuntu env from 16.04 to 22.04

PeterDaveHello · PeterDaveHello · commit 208c30dd4c69 · 2023-01-16T00:24:53.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 language: minimal
-dist: xenial
+dist: jammy
 
 git:
   depth: 5
