fix: bump pnpm version

Author: HerringtonDarkholme

.github/workflows/gh-pages.yml

@@ -40,7 +40,7 @@ jobs:
       - name: Setup pnpm
         uses: pnpm/[email protected]
         with:
-          version: 7.12.2
+          version: 9.15.1
           run_install: |
               - recursive: true