Node 16 as default runtime (#136)

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

Author: crazy-max

action.yml

@@ -56,6 +56,6 @@ outputs:
     description: 'Email address associated with the GPG key'
 
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'dist/index.js'
   post: 'dist/index.js'

dev.Dockerfile

@@ -1,6 +1,6 @@
-# syntax=docker/dockerfile:1.4
+# syntax=docker/dockerfile:1
 
-ARG NODE_VERSION=12
+ARG NODE_VERSION=16
 
 FROM node:${NODE_VERSION}-alpine AS base
 RUN apk add --no-cache cpio findutils git