Install Go 1.16 in the pipeline

- Install gorelease via go install as opposed to via the curl command which is no longer supported

.travis.yml

@@ -4,7 +4,7 @@ dist: trusty
 
 language: go
 go:
-- "1.14.x"
+- "1.16.x"
 
 services:
   - docker
@@ -13,7 +13,7 @@ env:
   - TF_VERSION=0.13.6 PERFORM_DOCKER_LOGIN=true GO111MODULE=on
 
 install:
-  - export BINDIR=/home/travis/bin && curl -sfL https://install.goreleaser.com/github.com/goreleaser/goreleaser.sh | sh
+  - go install github.com/goreleaser/goreleaser@latest
   - wget https://releases.hashicorp.com/terraform/"$TF_VERSION"/terraform_"$TF_VERSION"_linux_amd64.zip
   - unzip terraform_"$TF_VERSION"_linux_amd64.zip
   - sudo mv terraform /usr/local/bin/