chore(deps): update actions/setup-node action to v6 (#75)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/demo.yml

@@ -24,7 +24,7 @@ jobs:
           version: 10
 
       - name: ⎔ Setup Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: pnpm

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
           version: 10
 
       - name: ⎔ Setup Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           registry-url: 'https://registry.npmjs.org'

.github/workflows/test.yml

@@ -29,7 +29,7 @@ jobs:
           version: 10
 
       - name: ⎔ Setup Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: pnpm