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

Author: renovate[bot]

.github/actions/setup-pnpm/action.yml

@@ -15,7 +15,7 @@ runs:
   using: "composite"
   steps:
     - name: Install pnpm
-      uses: pnpm/action-setup@v5
+      uses: pnpm/action-setup@v6
 
     - name: Install Node
       uses: actions/setup-node@v6