build: bump cspell from 6.15.1 to 6.18.1 (#54)

Bumps [cspell](https://github.com/streetsidesoftware/cspell) from 6.15.1 to 6.18.1.
- [Release notes](https://github.com/streetsidesoftware/cspell/releases)
- [Changelog](https://github.com/streetsidesoftware/cspell/blob/main/CHANGELOG.md)
- [Commits](streetsidesoftware/cspell@v6.15.1...v6.18.1)

---
updated-dependencies:
- dependency-name: cspell
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]