.travis.yml: update Go versions

fhs · fhs · commit 6208ede9c347 · 2020-08-18T12:04:20.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,9 +7,8 @@ env:
     - GO111MODULE=on
 
 go:
-  - "1.10.x"
-  - "1.11.x"
-  - "1.12.x"
+  - "1.14.x"
+  - "1.15.x"
 
 install: ignore
 
