Run update first to fix CI (#140)

Author: caugustus-sourcegraph

scripts/ci/install-helm-env.sh

@@ -4,6 +4,7 @@ set -euf -o pipefail
 
 ### Install Helm
 curl https://baltocdn.com/helm/signing.asc | sudo apt-key add -
+sudo apt-get update
 sudo apt-get install apt-transport-https --yes
 echo "deb https://baltocdn.com/helm/stable/debian/ all main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
 sudo apt-get update