Bump actions/setup-node from 5 to 6 in /.github/workflows

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/build-helper.yml

@@ -64,7 +64,7 @@ jobs:
                   go-version: ${{env.GO_VERSION}}
                   cache-dependency-path: |
                       go.sum
-            - uses: actions/setup-node@v5
+            - uses: actions/setup-node@v6
               with:
                   node-version: ${{env.NODE_VERSION}}
                   cache: npm

.github/workflows/bump-version.yml

@@ -39,7 +39,7 @@ jobs:
                   token: ${{ steps.app-token.outputs.token }}
 
             # General build dependencies
-            - uses: actions/setup-node@v5
+            - uses: actions/setup-node@v6
               with:
                   node-version: ${{env.NODE_VERSION}}
                   cache: npm

.github/workflows/codeql.yml

@@ -71,7 +71,7 @@ jobs:
                   version: 3.x
                   repo-token: ${{ secrets.GITHUB_TOKEN }}
 
-            - uses: actions/setup-node@v5
+            - uses: actions/setup-node@v6
               with:
                   node-version: ${{env.NODE_VERSION}}
                   cache: npm

.github/workflows/copilot-setup-steps.yml

@@ -26,7 +26,7 @@ jobs:
                   go-version: ${{ env.GO_VERSION }}
                   cache-dependency-path: go.sum
 
-            - uses: actions/setup-node@v5
+            - uses: actions/setup-node@v6
               with:
                   node-version: ${{ env.NODE_VERSION }}
                   cache: npm

.github/workflows/deploy-docsite.yml

@@ -36,7 +36,7 @@ jobs:
             - uses: actions/checkout@v5
               with:
                   fetch-depth: 0
-            - uses: actions/setup-node@v5
+            - uses: actions/setup-node@v6
               with:
                   node-version: ${{env.NODE_VERSION}}
                   cache: npm

.github/workflows/testdriver-build.yml

@@ -47,7 +47,7 @@ jobs:
             - uses: actions/setup-go@v6
               with:
                   go-version: ${{env.GO_VERSION}}
-            - uses: actions/setup-node@v5
+            - uses: actions/setup-node@v6
               with:
                   node-version: ${{env.NODE_VERSION}}
                   cache: npm