chore: harden npm supply chain controls (#11157)

docs/getting-started/installation/prowler-app.mdx

@@ -38,7 +38,7 @@ Refer to the [Prowler App Tutorial](/user-guide/tutorials/prowler-app) for detai
 
     - `git` installed.
     - `poetry` installed: [poetry installation](https://python-poetry.org/docs/#installation).
-    - `npm` installed: [npm installation](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm).
+    - `pnpm` installed through [Corepack](https://pnpm.io/installation#using-corepack) or the standalone [pnpm installation](https://pnpm.io/installation).
     - `Docker Compose` installed: https://docs.docker.com/compose/install/.
 
     <Warning>
@@ -97,9 +97,11 @@ Refer to the [Prowler App Tutorial](/user-guide/tutorials/prowler-app) for detai
     ```bash
     git clone https://github.com/prowler-cloud/prowler \
     cd prowler/ui \
-    npm install \
-    npm run build \
-    npm start
+    corepack enable \
+    corepack install \
+    pnpm install --frozen-lockfile \
+    pnpm run build \
+    pnpm start
     ```
 
     > Enjoy Prowler App at http://localhost:3000 by signing up with your email and password.