Bump taskcluster from 64.2.6 to 64.2.7 in /tools

Bumps [taskcluster](https://github.com/taskcluster/taskcluster) from 64.2.6 to 64.2.7.
- [Release notes](https://github.com/taskcluster/taskcluster/releases)
- [Changelog](https://github.com/taskcluster/taskcluster/blob/main/CHANGELOG.md)
- [Commits](taskcluster/taskcluster@v64.2.6...v64.2.7)

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

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

Author: dependabot[bot]

tools/ci/requirements_tc.txt

@@ -1,4 +1,4 @@
 pygithub==2.3.0
 pyyaml==6.0.1
 requests==2.31.0
-taskcluster==64.2.6
+taskcluster==64.2.7

tools/requirements_tests.txt

@@ -2,5 +2,5 @@ httpx[http2]==0.24.1
 json-e==4.5.3
 jsonschema==4.17.3
 pyyaml==6.0.1
-taskcluster==64.2.6
+taskcluster==64.2.7
 mozterm==1.0.0