dependency version upgrades and associated fixes

Author: hhund

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           # choose node.js version to use
-          node-version: 18
+          node-version: 20
 
       - name: Install dependencies
         run: cd docs && npm ci

.github/workflows/pull_request.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           # choose node.js version to use
-          node-version: 18
+          node-version: 20
 
       - name: Install dependencies
         run: cd docs && npm ci

docs/.github/workflows/deploy-docs.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           cache: npm
 
       - name: Install Deps