Bump nhsuk-frontend from 6.1.0 to 6.2.0 in /DigitalLearningSolutions.Web

Bumps [nhsuk-frontend](https://github.com/nhsuk/nhsuk-frontend) from 6.1.0 to 6.2.0.
- [Release notes](https://github.com/nhsuk/nhsuk-frontend/releases)
- [Changelog](https://github.com/nhsuk/nhsuk-frontend/blob/main/CHANGELOG.md)
- [Commits](nhsuk/nhsuk-frontend@v6.1.0...v6.2.0)

---
updated-dependencies:
- dependency-name: nhsuk-frontend
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]