travis-ci:upgrade lein to 2.9.1

xfeep · xfeep · commit 7198d9bafbe6 · 2022-11-12T20:03:09.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,7 +4,7 @@ dist: xenial
 
 language: clojure
 
-lein: 2.6.1  
+lein: 2.9.1  
 
 jdk:
   - openjdk8
