build(deps): bump actions/setup-node from 5 to 6

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 5 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/matrix.yml

@@ -10,7 +10,7 @@ jobs:
         node: [18, 20, 22]
     steps:
       - name: Use Node.js ${{ matrix.node }}
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}
       - run: node --version

.github/workflows/nodejs.yml

@@ -13,7 +13,7 @@ jobs:
   setup-node:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
       - run: node --version
       - run: npm --version
       - run: npx --version
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Use Node.js 12
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 12
       - run: node --version
@@ -40,7 +40,7 @@ jobs:
         run: echo "NODE_VERSION=$(cat .nvmrc)" >> $GITHUB_OUTPUT
         id: nvm
       - name: Use Node.js ${{ steps.nvm.outputs.NODE_VERSION }}
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ steps.nvm.outputs.NODE_VERSION }}
       - run: node --version

.github/workflows/npm-publish.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       # Setup .npmrc file to publish to npm
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           registry-url: 'https://registry.npmjs.org'
       - run: npm install