feat: use rust setup action

.github/workflows/docs.yaml

@@ -23,12 +23,8 @@ jobs:
           git fetch origin
           git reset --hard 'origin/${{ github.ref_name }}'
 
-      - name: Install Rust and Dependencies
-        run: |
-          sudo apt install libwebkit2gtk-4.0-dev build-essential curl wget file libssl-dev libgtk-3-dev libayatana-appindicator3-dev librsvg2-dev
-          rustup update stable && rustup default stable
-
       - name: Generate Rust Docs
+        uses: moonrepo/setup-rust@v1
         run: |
           pushd backend/
           cargo doc --no-deps