ci: bump actions/setup-node from 4 to 6 (#4)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v4...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>
Co-authored-by: Konstantin <constantant1@gmail.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
       # - run: npx nx start-ci-run --distribute-on="3 linux-medium-js" --stop-agents-after="e2e-ci"
 
       # Cache node_modules
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 24
           cache: 'npm'

.github/workflows/release.yml

@@ -35,7 +35,7 @@ jobs:
 
       # registry-url writes an .npmrc pointing at registry.npmjs.org and
       # sets up NODE_AUTH_TOKEN forwarding for npm publish.
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 24
           cache: npm