fix(deployment): fixes pnpm action setup

Author: BenTopping

.github/workflows/deploy.yml

@@ -30,10 +30,13 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v2
+        with:
+          version: latest
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version-file: '.nvmrc'
           cache: 'pnpm'
       - name: Install dependencies
         run: pnpm install --frozen-lockfile