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](https://github.com/actions/setup-node/compare/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>

.github/workflows/docker.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           submodules: recursive
       - name: Set up Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 20
       - name: Install dependencies and build frontend

.github/workflows/release.yml

@@ -45,7 +45,7 @@ jobs:
           go-version-file: go.mod
 
       - 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/windows.yml

@@ -34,7 +34,7 @@ jobs:
           go-version-file: go.mod
 
       - name: Setup Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '22'
           registry-url: 'https://registry.npmjs.org'
@@ -118,7 +118,7 @@ jobs:
           go-version-file: go.mod
 
       - name: Setup Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '22'
           registry-url: 'https://registry.npmjs.org'