Update actions/setup-node action to v5

| datasource  | package            | from | to |
| ----------- | ------------------ | ---- | -- |
| github-tags | actions/setup-node | v4   | v5 |


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

Author: renovate[bot]

.github/workflows/continuous-integration.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v5
         with:
           node-version: 18
           cache: yarn

.github/workflows/deploy-gh-pages.yml

@@ -25,7 +25,7 @@ jobs:
         working-directory: ./docs
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v5
         with:
           node-version: 18
           cache: yarn