Bump web-specs from 3.18.1 to 3.20.1 (#1665)

Bumps [web-specs](https://github.com/w3c/browser-specs) from 3.18.1 to 3.20.1.
- [Release notes](https://github.com/w3c/browser-specs/releases)
- [Commits](https://github.com/w3c/browser-specs/compare/web-specs@3.18.1...web-specs@3.20.1)

---
updated-dependencies:
- dependency-name: web-specs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -39,7 +39,7 @@
     "fetch-filecache-for-crawling": "5.1.1",
     "puppeteer": "23.2.1",
     "semver": "^7.3.5",
-    "web-specs": "3.18.1",
+    "web-specs": "3.20.1",
     "webidl2": "24.4.1"
   },
   "devDependencies": {