CI based on unsupported Node.js 12

[MikeMcC399]

Issue

The CircleCI workflow uses the CircleCI executor

jobs:
  build:
    executor:
      name: node/default
      tag: '12'
    steps:
      - checkout
      - node/with-cache:
          steps:
            - run: npm ci
      - run: npm run lint
      - run: npm test

and

orbs:
  node: circleci/[email protected]
version: 2.1

This references the deprecated Docker image circleci/node:12 using Node.js 12.22.7

Node.js 12 entered end-of-life in April 2022.