⬆️ Pin pnpm/action-setup action to a7487c7 (#388)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/actions/setup-pnpm/action.yml

@@ -13,7 +13,7 @@ runs:
         echo "version=$PNPM_VERSION" >> $GITHUB_OUTPUT
 
     - name: Setup pnpm
-      uses: pnpm/action-setup@v4
+      uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4
       with:
         version: ${{ steps.pnpm-version.outputs.version }}