ci: Update helm installation script
In the hope that it will fix the `curl: (3) Illegal characters found in URL` error inside the deployment step:
@@ -31,7 +31,7 @@ before_deploy:
- gcloud --quiet version
- gcloud --quiet components update
- gcloud --quiet components update kubectl
-- curl https://raw.githubusercontent.com/kubernetes/helm/9476fcc10aaaf4bbcbeb6b7b9e62e9f03d312697/scripts/get | bash
+- curl https://raw.githubusercontent.com/kubernetes/helm/d87ce93e1e287ece84d940dbfe09b0de493d9953/scripts/get | bash
deploy:
- provider: releases
api_key:
