CI against Ruby 3.1.1 at Travis CI

yahonda · yahonda · commit d64908fec444 · 2022-03-02T08:44:05.000+09:00
* Ruby 3.1.1 Released https://www.ruby-lang.org/en/news/2022/02/18/ruby-3-1-1-released/
diff --git a/.travis.yml b/.travis.yml
@@ -40,7 +40,7 @@ script:
 
 language: ruby
 rvm:
-  - 3.1.0
+  - 3.1.1
   - 3.0.3
   - 2.7.5
   - ruby-head
