Bump taskcluster from 77.0.0 to 78.2.0 (#4773)

Bumps [taskcluster](https://github.com/taskcluster/taskcluster) from 77.0.0 to 78.2.0.
- [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/v77.0.0...v78.2.0)

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

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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==4.8.0
 pyyaml==6.0.2
 requests==2.32.3
-taskcluster==77.0.0
+taskcluster==78.2.0

requirements.txt

@@ -36,7 +36,7 @@ scipy==1.15.1
 sendgrid==6.11.0
 shap[plots]==0.46.0
 tabulate==0.9.0
-taskcluster==77.0.0
+taskcluster==78.2.0
 tenacity==8.5.0
 tqdm==4.67.1
 unidiff==0.7.5