Bump pip-tools from 6.6.1 to 6.6.2 in /tests/application_tests
Bump pip-tools from 6.6.1 to 6.6.2 in /tests/application_tests

Bumps [pip-tools](https://github.com/jazzband/pip-tools) from 6.6.1 to 6.6.2.
- [Release notes](https://github.com/jazzband/pip-tools/releases)
- [Changelog](https://github.com/jazzband/pip-tools/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jazzband/pip-tools/compare/6.6.1...6.6.2)

---
updated-dependencies:
- dependency-name: pip-tools
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
ICTU/quality-time,ICTU/quality-time,ICTU/quality-time,ICTU/quality-time