upgrade nopt and add engines field (#748)

* upgrade nopt

* update node versions

Author: benmccann

appveyor.yml

@@ -3,7 +3,6 @@ image:  # http://www.appveyor.com/docs/appveyor-yml
 
 environment:
   matrix:  # https://github.com/nodejs/release#release-schedule
-    - nodejs_version: 16
     - nodejs_version: 18
     - nodejs_version: 20
     - nodejs_version: 22

package-lock.json

@@ -19,12 +19,15 @@
   },
   "bin": "./bin/node-pre-gyp",
   "main": "./lib/node-pre-gyp.js",
+  "engines": {
+    "node": ">=18"
+  },
   "dependencies": {
     "detect-libc": "^2.0.0",
     "https-proxy-agent": "^5.0.0",
     "make-dir": "^3.1.0",
     "node-fetch": "^2.6.7",
-    "nopt": "^5.0.0",
+    "nopt": "^7.2.1",
     "npmlog": "^7.0.1",
     "rimraf": "^5.0.5",
     "semver": "^7.3.5",