chore(deps): bump the pip group across 2 directories with 1 update

Bumps the pip group with 1 update in the / directory: [virtualenv](https://github.com/pypa/virtualenv).
Bumps the pip group with 1 update in the /tools/tlc directory: [virtualenv](https://github.com/pypa/virtualenv).

Updates `virtualenv` from 20.26.4 to 20.26.6
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](https://github.com/pypa/virtualenv/compare/20.26.4...20.26.6)

Updates `virtualenv` from 20.26.5 to 20.26.6
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](https://github.com/pypa/virtualenv/compare/20.26.4...20.26.6)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-type: indirect
  dependency-group: pip
- dependency-name: virtualenv
  dependency-type: indirect
  dependency-group: pip
...

Change-Id: I368cd2a93d5e682f6117170d8cd8c7fa696a38d5
Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Chris Kay <chris.kay@arm.com>
(cherry picked from commit 42f024abd5dc85604e525f7b648bdd9861af21a5)
2 files changed