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](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/build.yml

@@ -37,7 +37,7 @@ jobs:
           restore-keys: |
             jetkvm-cgo-${{ hashFiles('internal/native/cgo/**/*.c', 'internal/native/cgo/**/*.h', 'internal/native/cgo/**/*.patch', 'internal/native/cgo/**/*.txt', 'internal/native/cgo/**/*.sh', '!internal/native/cgo/build/**') }}
       - name: Set up Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: "22"
           cache: "npm"

.github/workflows/ui-lint.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v5
       - name: Set up Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: "22"
           cache: "npm"