Update streetsidesoftware/cspell-action action to v6.10.1

Author: renovate[bot]

.github/workflows/spell-check.yml

@@ -8,6 +8,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: streetsidesoftware/cspell-action@v6
+      - uses: streetsidesoftware/cspell-action@8485bb4b688c68384c2f6db7ad931f5e3e63f21c # v6.10.1
         with:
           config: .cspell.yaml