Bump taskcluster from 64.2.6 to 64.2.8 (#4169)

Bumps [taskcluster](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](https://github.com/taskcluster/taskcluster/compare/v64.2.6...v64.2.8)

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

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

infra/spawn_pipeline_requirements.txt

@@ -1,4 +1,4 @@
 json-e==4.7.0
 pyyaml==6.0.1
 requests==2.31.0
-taskcluster==64.2.6
+taskcluster==64.2.8

requirements.txt

@@ -26,7 +26,7 @@ scipy==1.12.0
 sendgrid==6.11.0
 shap[plots]==0.45.0
 tabulate==0.9.0
-taskcluster==64.2.6
+taskcluster==64.2.8
 tenacity==8.2.3
 tqdm==4.66.4
 xgboost==2.0.3