ci: do not install all the dependencies to validate the PR description (#11377)

Author: vicb

.github/workflows/validate-pr-description.yml

@@ -44,6 +44,7 @@ jobs:
         if: steps.changes.outputs.everything_but_markdown == 'true'
         uses: ./.github/actions/install-dependencies
         with:
+          pnpm-filters: "./tools"
           turbo-api: ${{ secrets.TURBO_API }}
           turbo-team: ${{ secrets.TURBO_TEAM }}
           turbo-token: ${{ secrets.TURBO_TOKEN }}