Bump minimum supported Node version to v18 (#978)

Author: thecrypticace

package-lock.json

@@ -47,7 +47,7 @@
     "@types/dlv": "^1.1.4",
     "@types/find-up": "^4.0.0",
     "@types/license-checker": "^25.0.6",
-    "@types/node": "14.14.34",
+    "@types/node": "^18.19.33",
     "@types/normalize-path": "^3.0.2",
     "@types/picomatch": "^2.3.3",
     "@types/postcss-import": "^14.0.3",
@@ -89,5 +89,8 @@
     "vscode-languageserver": "8.1.0",
     "vscode-languageserver-textdocument": "1.0.11",
     "vscode-uri": "3.0.2"
+  },
+  "engines": {
+    "node": ">=18.0.0"
   }
 }