build: Node.js@11.15

Author: dougwilson

.github/workflows/ci.yml

@@ -80,7 +80,7 @@ jobs:
           node-version: "10.24"
 
         - name: Node.js 11.x
-          node-version: "11.9"
+          node-version: "11.15"
 
     steps:
     - uses: actions/checkout@v2