ci(github-actions): update cspell to v6 (#998)

.github/workflows/ci.yml

@@ -130,7 +130,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: streetsidesoftware/cspell-action@v2
+      - uses: streetsidesoftware/cspell-action@v6
         with:
           # Github token used to fetch the list of changed files in the commit.
           # Default: ${{ github.token }}