chore: bump node versions in engine constraint

Bumps the version to `>= 18` and replaces `21` with `22` in the CI
workflows.

.github/workflows/nodejs.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: [18, 20, 21]
+        version: [18, 20, 22]
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:

package.json

@@ -9,7 +9,7 @@
     "Elan Shanker"
   ],
   "engines": {
-    "node": ">= 14.10.0"
+    "node": ">= 18"
   },
   "type": "module",
   "main": "lib/index.js",
@@ -18,8 +18,6 @@
     "normalize-path": "3.0.0",
     "readdirp": "github:paulmillr/readdirp"
   },
-  "optionalDependencies": {
-  },
   "devDependencies": {
     "@types/node": "^16.11.7",
     "@typescript-eslint/eslint-plugin": "^6.21.0",