Run jest using npm exec

`npm bin` was removed: npm/cli#5459

Signed-off-by: Andrew Haines <[email protected]>

Author: haines

packages/test/scripts/jest

@@ -4,7 +4,7 @@ set -o nounset
 set -o pipefail
 
 node_version=$(node --version)
-npm_bin=$(npm bin)
+npm=$(which npm)
 
 node_command=(node)
 
@@ -16,4 +16,4 @@ esac
 
 export NODE_EXTRA_CA_CERTS=servers/tmp/certificates/server.root.crt
 
-exec "${node_command[@]}" "${npm_bin}/jest" "$@"
+exec "${node_command[@]}" "${npm}" exec -- jest "$@"