Chore(deps): Bump actions/setup-node from 5 to 6 (#964)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/publish.yml

@@ -17,7 +17,7 @@ jobs:
         persist-credentials: false
 
     - name: Use Node.js
-      uses: actions/setup-node@v5
+      uses: actions/setup-node@v6
       with:
         node-version: '24.x'
 

.github/workflows/tests.yml

@@ -43,7 +43,7 @@ jobs:
         persist-credentials: false
 
     - name: Use Node.js
-      uses: actions/setup-node@v5
+      uses: actions/setup-node@v6
       with:
         node-version: '24.x'
 
@@ -56,7 +56,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Use Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '24.x'
       - name: Install dependencies
@@ -110,7 +110,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: Use Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '24.x'
 
@@ -180,7 +180,7 @@ jobs:
         run: ./start
 
       - name: Use Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '24.x'
 
@@ -248,7 +248,7 @@ jobs:
         run: ./start
 
       - name: Use Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '24.x'