build: use [email protected] for Node.js < 10

Author: dougwilson

.github/workflows/ci.yml

@@ -84,11 +84,11 @@ jobs:
 
         - name: Node.js 8.x
           node-version: "8.17"
-          npm-i: [email protected]
+          npm-i: [email protected] [email protected]
 
         - name: Node.js 9.x
           node-version: "9.11"
-          npm-i: [email protected]
+          npm-i: [email protected] [email protected]
 
         - name: Node.js 10.x
           node-version: "10.24"