Bump streetsidesoftware/cspell-action from 6.8.1 to 6.9.0

Bumps [streetsidesoftware/cspell-action](https://github.com/streetsidesoftware/cspell-action) from 6.8.1 to 6.9.0.
- [Release notes](https://github.com/streetsidesoftware/cspell-action/releases)
- [Changelog](https://github.com/streetsidesoftware/cspell-action/blob/main/CHANGELOG.md)
- [Commits](streetsidesoftware/cspell-action@v6.8.1...v6.9.0)

---
updated-dependencies:
- dependency-name: streetsidesoftware/cspell-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/speller.yml

@@ -18,6 +18,6 @@ jobs:
         uses: "actions/[email protected]"
 
       - name: "Run"
-        uses: streetsidesoftware/cspell-action@v6.8.1
+        uses: streetsidesoftware/cspell-action@v6.9.0
         with:
           incremental_files_only: false