Bump respec from 34.1.6 to 34.1.8 (#1370)

Bumps [respec](https://github.com/w3c/respec) from 34.1.6 to 34.1.8.
- [Release notes](https://github.com/w3c/respec/releases)
- [Changelog](https://github.com/w3c/respec/blob/main/CHANGELOG.md)
- [Commits](w3c/respec@v34.1.6...v34.1.8)

---
updated-dependencies:
- dependency-name: respec
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -44,7 +44,7 @@
   "devDependencies": {
     "chai": "4.3.8",
     "mocha": "10.2.0",
-    "respec": "34.1.6",
+    "respec": "34.1.8",
     "respec-hljs": "2.1.1",
     "rollup": "3.29.2",
     "undici": "^5.22.1"