Bump taskcluster from 44.20.4 to 44.21.0 (#3088)

Bumps [taskcluster](https://github.com/taskcluster/taskcluster) from 44.20.4 to 44.21.0.
- [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/v44.20.4...v44.21.0)

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

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

infra/spawn_pipeline_requirements.txt

@@ -1,4 +1,4 @@
 json-e==4.4.3
 pyyaml==6.0
 requests==2.28.1
-taskcluster==44.20.4
+taskcluster==44.21.0

requirements.txt

@@ -26,7 +26,7 @@ scipy==1.9.2
 sendgrid==6.9.7
 shap[plots]==0.41.0
 tabulate==0.8.10
-taskcluster==44.20.4
+taskcluster==44.21.0
 tenacity==8.1.0
 tqdm==4.64.1
 xgboost==1.6.2