Bump jsdom from 20.0.3 to 21.0.0

Bumps [jsdom](https://github.com/jsdom/jsdom) from 20.0.3 to 21.0.0.
- [Release notes](https://github.com/jsdom/jsdom/releases)
- [Changelog](https://github.com/jsdom/jsdom/blob/master/Changelog.md)
- [Commits](jsdom/jsdom@20.0.3...21.0.0)

---
updated-dependencies:
- dependency-name: jsdom
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -11,7 +11,7 @@
   "author": "@dwyl & friends!",
   "devDependencies": {
     "decache": "^4.6.0",
-    "jsdom": "^20.0.0",
+    "jsdom": "^21.0.0",
     "jsdom-global": "^3.0.2",
     "live-server": "^1.2.1",
     "nyc": "^15.1.0",