[runtime] Upgrade Node.js to version 16

.github/workflows/code-quality.yml

@@ -18,7 +18,7 @@ jobs:
 
             - uses: actions/setup-node@v2
               with:
-                  node-version: 14
+                  node-version: 16
 
             - name: "Cache node_modules"
               uses: actions/cache@v2

.nvmrc

@@ -1 +1 @@
-14
+16

README.md

@@ -6,10 +6,10 @@ We welcome PRs to add projects to the Rich / Textual galleries. Can't promise we
 
 ## Start dev server for maintaining purpose
 
-You will need Node.js (version 14, as newer versions are not supported by our hosting platform at the moment) to run the site locally.  
+You will need Node.js (version 16 to run the site locally.  
 Using [nvm](https://github.com/nvm-sh/nvm#intro) is the recommended way to install such a version. Once it is installed, you can run the following commands:
 
--   `nvm install 14 && nvm use 14` - installs Node.js v14
+-   `nvm install 16 && nvm use 16` - installs Node.js v14
 -   `npm i` - installs the Node.js dependencies
 -   `npm run dev` - starts the local development server
 

package.json

@@ -2,13 +2,13 @@
     "private": true,
     "name": "Textualize.io",
     "engines": {
-        "node": "14.x"
+        "node": "16.x"
     },
     "scripts": {
         "dev": "next dev",
         "build": "next build",
         "build:prod": "npm run build:textualize-cache:display && npm run scripts:transpile && npm run scripts:generate-data-code-for-galleries && next build && npm run build:textualize-cache:display",
-        "build:textualize-cache:display": "cat .next/cache/textualize-cache.*.json || true",
+        "build:textualize-cache:display": "mkdir -p .next/cache/ && cat .next/cache/textualize-cache.*.json || true",
         "build:textualize-cache:clear": "rm -f .next/cache/textualize-cache.*.json || true",
         "start": "next start",
         "prepare": "husky install",