Use node-16 for Mac OS arm64 job (#519)

Author: sfod

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
       - 'docs'
 
 env:
-  BUILDER_VERSION: v0.9.56
+  BUILDER_VERSION: v0.9.62
   BUILDER_SOURCE: releases
   BUILDER_HOST: https://d19elf31gohf1l.cloudfront.net
   PACKAGE_NAME: aws-iot-device-sdk-js-v2

builder.json

@@ -7,6 +7,16 @@
     "+packages": [
         "maven"
     ],
+    "hosts": {
+        "macos": {
+            "architectures": {
+                "arm64": {
+                    "_comment": "Mac OS (arm64) has only experimental support for Node v15 and earlier, so stick to Node v16, see Node v15 docs: https://github.com/nodejs/node/blob/v15.x/BUILDING.md#platform-list",
+                    "!imports": [ "node-16" ]
+                }
+            }
+        }
+    },
     "deps_dir": "deps",
 
     "build_steps": [