kar cli now requires go 1.16+ (#228)

Author: dgrove-oss

.github/workflows/cli-release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.15'
+          go-version: '1.16'
       - name: Get Version
         id: get_version
         run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\/v}