Update node version (#7)

* Update node version

* try this

* try this

* ok

Author: rickhanlonii

.nvmrc

@@ -1 +1 @@
-12.22.0
+18.20.6

package.json

@@ -59,7 +59,7 @@
     "unist-util-visit": "^1.1.3"
   },
   "engines": {
-    "node": "12.x.x || 14.x.x || 15.x.x || 16.x.x",
+    "node": "12.x.x || 14.x.x || 15.x.x || 16.x.x || 18.x.x",
     "yarn": "^1.3.2"
   },
   "homepage": "https://reactjs.org/",
@@ -71,7 +71,7 @@
     "url": "git+https://github.com/reactjs/reactjs.org.git"
   },
   "scripts": {
-    "build": "gatsby clean && gatsby build",
+    "build": "export NODE_OPTIONS=--openssl-legacy-provider && gatsby clean && gatsby build",
     "check-all": "npm-run-all prettier generate-ids --parallel lint flow",
     "ci-check": "npm-run-all prettier:diff --parallel lint flow",
     "dev": "gatsby develop -H 0.0.0.0",