chore(deps): Bump actions/setup-node from 5 to 6 (#1119)

Author: dependabot[bot]

.github/workflows/update.yml

@@ -29,7 +29,7 @@ jobs:
           : ${ELASTIC_VERSION:?unset}
           echo "version=${ELASTIC_VERSION}" >>"$GITHUB_OUTPUT"
 
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
       - run: npm install semver
 
       - name: Get latest release version