Update github actions

.github/workflows/docs.yaml

@@ -31,14 +31,8 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 18
-
-      - name: Setup cache
-        uses: actions/cache@v3
-        with:
-          path: |
-            ${{ github.workspace }}/docs/node_modules
-          key: ${{ runner.os }}-node-18-${{ hashFiles('docs/yarn.lock') }}
+          node-version: 20
+          cache: yarn
 
       - name: Install dependencies
         run: yarn install