chore: bump taskcluster-client from 64.2.6 to 64.2.8

Bumps [taskcluster-client](https://github.com/taskcluster/taskcluster) from 64.2.6 to 64.2.8.
- [Release notes](https://github.com/taskcluster/taskcluster/releases)
- [Changelog](https://github.com/taskcluster/taskcluster/blob/main/CHANGELOG.md)
- [Commits](taskcluster/taskcluster@v64.2.6...v64.2.8)

---
updated-dependencies:
- dependency-name: taskcluster-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -35,7 +35,7 @@
     "node-fetch": "^3.3.2",
     "sha": "^3.0.0",
     "stream-to-promise": "^3.0.0",
-    "taskcluster-client": "^64.2.6"
+    "taskcluster-client": "^64.2.8"
   },
   "bin": {
     "get-firefox": "./bin/get-firefox.js"