ci: add 14.x back to CI

Author: brettstack

.github/workflows/release-on-push-to-mainline.yml

@@ -14,7 +14,7 @@ jobs:
  runs-on: ubuntu-latest
  strategy:
  matrix:
- node-version: [16.x, 18.x, 20.x]
+ node-version: [14.x, 16.x, 18.x, 20.x]
  steps:
  - name: Checkout
  uses: actions/checkout@v4