ci: remove Node 18 pin in deploy_storybook

Author: ddecrulle

.github/workflows/ci.yaml

@@ -45,8 +45,6 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v5
-        with:
-          node-version: "18"
       - uses: bahmutov/npm-install@v1
       - run: yarn build-storybook -o ./build_storybook
       - run: git remote set-url origin https://git:${GITHUB_TOKEN}@github.com/${{github.repository}}.git