chore: updated go to 1.21

Aerex · Aerex · commit eb1ccc9c36cd · 2023-11-13T13:01:25.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 language: go
 dist: bionic
 go:
-- '1.17.x'
+- '1.21.x'
 addons:
   apt:
     packages:
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/IBM-Cloud/ibm-cloud-cli-sdk
 
-go 1.20
+go 1.21
 
 require (
 	github.com/fatih/color v1.7.1-0.20180516100307-2d684516a886
