[edge] bump @edge-runtime/* package suite (vercel#49092)

Bumping `@edge-runtime/*` <picture data-single-emoji=":edge-runtime:" title=":edge-runtime:"><img class="emoji" width="20" height="auto" src="https://emoji.slack-edge.com/T0CAQ00TU/edge-runtime/b940e917443aa49f.png" alt=":edge-runtime:" align="absmiddle"></picture>  packages to their latest beta, as we had some huge improvements and big changes on how it works internally.

* Using the latest `undici` which provides a WebSocket implementation
* Less polyfill usage as we load modules in the Node.js realm, and can reuse modules from Node.js as time goes on <picture data-single-emoji=":just-right2:" title=":just-right2:"><img class="emoji" width="20" height="auto" src="https://emoji.slack-edge.com/T0CAQ00TU/just-right2/588cf34d02f4b3bd.png" alt=":just-right2:" align="absmiddle"></picture> 
* `instanceof` checks now work within the realm <picture data-single-emoji=":mind_blown:" title=":mind_blown:"><img class="emoji" width="20" height="auto" src="https://emoji.slack-edge.com/T0CAQ00TU/mind_blown/0186b6f181040126.gif" alt=":mind_blown:" align="absmiddle"></picture>

Author: Schniz

package.json

@@ -64,7 +64,7 @@
     "@babel/plugin-proposal-object-rest-spread": "7.14.7",
     "@babel/preset-flow": "7.14.5",
     "@babel/preset-react": "7.14.5",
-    "@edge-runtime/jest-environment": "2.0.8",
+    "@edge-runtime/jest-environment": "2.2.0",
     "@fullhuman/postcss-purgecss": "1.3.0",
     "@mdx-js/loader": "2.2.1",
     "@mdx-js/react": "2.2.1",