feat(deploy): enable pnpm package manager for Astro website deployment

This commit enables the use of the latest version of pnpm as the package manager for installing dependencies and building the Astro website during deployment. The package manager is normally automatically detected based on the lockfile.

.github/workflows/deploy-astro-website.yml

@@ -43,7 +43,7 @@ jobs:
         with:
           path: nodsoft_moltenobsidian_web # The root location of your Astro project inside the repository. (optional)
           # node-version: 18 # The specific version of Node that should be used to build your site. Defaults to 18. (optional)
-          # package-manager: pnpm@latest # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
+          package-manager: pnpm@latest # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
 
   deploy:
     needs: build