chore(deps): update pnpm/action-setup action to v6

Author: renovate[bot]

.github/workflows/main.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v6.0.2
 
       - name: Pnpm 🧱
-        uses: pnpm/action-setup@v4.2.0
+        uses: pnpm/action-setup@v6.0.4
 
       - name: Node.js ⚓
         uses: actions/setup-node@v6.3.0