build(deps-dev): update typedoc requirement from ^0.26.5 to ^0.26.6 in /website (#2387)

build(deps-dev): update typedoc requirement in /website

Updates the requirements on [typedoc](https://github.com/TypeStrong/TypeDoc) to permit the latest version.
- [Release notes](https://github.com/TypeStrong/TypeDoc/releases)
- [Changelog](https://github.com/TypeStrong/typedoc/blob/master/CHANGELOG.md)
- [Commits](TypeStrong/typedoc@v0.26.5...v0.26.6)

---
updated-dependencies:
- dependency-name: typedoc
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Giampaolo Bellavite <[email protected]>

Author: dependabot[bot]