build(deps): bump taskcluster from 37.2.0 to 37.3.0 in /tools (#620)

Bumps [taskcluster](https://github.com/taskcluster/taskcluster) from 37.2.0 to 37.3.0.
- [Release notes](https://github.com/taskcluster/taskcluster/releases)
- [Changelog](https://github.com/taskcluster/taskcluster/blob/main/CHANGELOG.md)
- [Commits](taskcluster/taskcluster@v37.2.0...v37.3.0)

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

tools/requirements.txt

@@ -3,4 +3,4 @@ async-timeout==3.0.1
 logbook==1.5.3
 raven==6.10.0
 structlog==20.1.0
-taskcluster==37.2.0
+taskcluster==37.3.0