docs: Update node version and docusaurus (#4617)

Author: joncinque

.github/workflows/pull-request-docs.yml

@@ -52,7 +52,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: '16'
+          node-version: '18'
       - name: "Build Docs"
         run: |
          cd docs/