Bump NPM requirement to 8+

To take advantage of NPM dependency overrides.

README.md

@@ -24,7 +24,7 @@ Learn more about [languages and technologies](docs/technologies.md).
 Make sure you have the following installed:
 
 * [Node] — at least 14.17, the latest LTS is recommended.
-* [NPM] — at least 6.0, the latest LTS is recommended.
+* [NPM] — at least 8.0, the latest LTS is recommended.
 
 > 💡 You can use [NVM] to install and use different versions of Node via the command-line.
 

package-lock.json

@@ -29,7 +29,7 @@
             },
             "engines": {
                 "node": ">=14.17",
-                "npm": ">=6.0"
+                "npm": ">=8.0"
             }
         },
         "node_modules/@babel/code-frame": {

package.json

@@ -7,7 +7,7 @@
     "type": "module",
     "engines": {
         "node": ">=14.17",
-        "npm": ">=6.0"
+        "npm": ">=8.0"
     },
     "scripts": {
         "start": "node --experimental-json-modules --no-warnings build/watch.js",