[Docs] Update to the latest mkdocs-material that includes all insider features

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Author: peterschmidt85

.github/workflows/build-docs.yml

@@ -13,7 +13,7 @@ jobs:
           python-version: 3.11
       - name: Install dstack
         run: |
-          uv sync --all-extras
+          uv sync --extra server
       - name: Build
         run: |
           sudo apt-get update && sudo apt-get install -y libcairo2-dev libfreetype6-dev libffi-dev libjpeg-dev libpng-dev libz-dev