Require Node v16+; update dev dependencies

Author: domenic

.github/workflows/build.yml

@@ -14,10 +14,9 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 14
           - 16
           - 18
-          - latest
+          - 20
     steps:
     - uses: actions/checkout@v3
     - uses: actions/setup-node@v3