build(deploy.yml): set node-version to 16

Author: gr2m

.github/workflows/deploy.yml

@@ -1,12 +1,9 @@
-# https://github.com/marketplace/actions/serverless
 name: Deploy
-
-on:
+"on":
   push:
     branches:
       - main
   workflow_dispatch: {}
-
 jobs:
   deploy:
     name: deploy
@@ -15,15 +12,14 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: 16
           cache: npm
       - run: npm ci
       - name: serverless deploy
         uses: serverless/github-action@master
         with:
           args: deploy
         env:
-          # probot/example-aws-lambda-serverless secrets provided by @gr2m
           SERVERLESS_ACCESS_KEY: ${{ secrets.SERVERLESS_ACCESS_KEY }}
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}