feat(node): bump from node 12 to node 16 default

Author: mikehardy

src/executors/linux_js.yml

@@ -1,12 +1,12 @@
 parameters:
   node_version:
-    description: The version of Node to use. This can be a full SemVer point release (such as 10.16.3), or just the minor release (such as 12.6), or a version alias. See https://circleci.com/developer/images/image/cimg/node#image-tags
+    description: The version of Node to use. This can be a full SemVer point release (such as 16.15.2), or just the minor release (such as 18.2), or a version alias. See https://circleci.com/developer/images/image/cimg/node#image-tags
     type: string
-    default: '12.22'
+    default: '16.15'
   resource_class:
     description: Changes the resource class of the executor. Requires a support request to enable the resource_class parameter. See https://circleci.com/docs/2.0/configuration-reference/#resource_class
     type: string
     default: medium
 docker:
   - image: cimg/node:<<parameters.node_version>>
-resource_class: <<parameters.resource_class>>
+resource_class: <<parameters.resource_class>>