Bump ptools from 1.3.5 to 1.3.6
Bump ptools from 1.3.5 to 1.3.6

Bumps [ptools](https://github.com/djberg96/ptools) from 1.3.5 to 1.3.6.
- [Release notes](https://github.com/djberg96/ptools/releases)
- [Changelog](https://github.com/djberg96/ptools/blob/master/CHANGES)
- [Commits](https://github.com/djberg96/ptools/compare/ptools-1.3.5...ptools-1.3.6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall