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

Author: renovate[bot]

.github/workflows/node.js-ci.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: "24"
-      - uses: pnpm/action-setup@v5
+      - uses: pnpm/action-setup@v6
         name: Install pnpm
         id: pnpm-install
         with:
@@ -61,7 +61,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: "24"
-      - uses: pnpm/action-setup@v5
+      - uses: pnpm/action-setup@v6
         name: Install pnpm
         id: pnpm-install
         with:

.github/workflows/npm-publish.yml

@@ -25,7 +25,7 @@ jobs:
           node-version: 24
           registry-url: https://registry.npmjs.org
 
-      - uses: pnpm/action-setup@v5.0.0
+      - uses: pnpm/action-setup@v6.0.0
         name: Install pnpm
         with:
           run_install: false