ci: 🎡 separate typedoc command into its own job

Author: streamich

.github/workflows/pr.yml

@@ -44,5 +44,19 @@ jobs:
       - run: yarn test:cli:pack
       - run: yarn demo:json-patch
       - run: yarn demo:json-pointer
+  typedoc:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: yarn
+      - run: yarn install --frozen-lockfile
       - run: yarn typedoc
-
+    
+