added python setup action

.github/workflows/ci.yml

@@ -13,7 +13,8 @@ jobs:
         uses: actions/checkout@v3
       - name: Install Typst CLI
         run: curl -fsSL https://typst.community/typst-install/install.sh | sh -s "$TYPST_VERSION"
-      - name: Set up Python 3
-        run: apt update -y && apt install python3-pip -y
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11' 
       - name: Run CI
         run: export PATH="$TYPST_INSTALL/bin:$PATH" && bash -c ./run-ci.sh