Revert "chore(): update engines"

This reverts commit ec94cb9.

I don't want to introduce breaking changes yet.  This will necessarily mean we cannot upgrade `which` to v3; see #32

package.json

@@ -98,7 +98,7 @@
     "unexpected-snapshot": "2.1.0"
   },
   "engines": {
-    "node": "^14.17.0 || ^16.13.0 || >=18.0.0",
+    "node": ">=14",
     "npm": ">=7"
   }
 }