chore(deps): pin dependency node to 18.20.8 (#550)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/npmpublish.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 18.20.8
           registry-url: https://registry.npmjs.org/
       - run: npm ci
       - run: npm run-script build