Update mdbook.yml

.github/workflows/mdbook.yml

@@ -32,11 +32,12 @@ jobs:
       MDBOOK_VERSION: 0.4.36
     steps:
       - uses: actions/checkout@v4
-      - name: Install mdBook
-        run: |
-          curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf -y | sh
-          rustup update
-          cargo install --version ${MDBOOK_VERSION} mdbook
+      - name: Setup Rust Toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
+        with:
+          toolchain: nightly
+          components: rust-docs
+      - run: cargo install mdbook
       - name: Setup Pages
         id: pages
         uses: actions/configure-pages@v5