ci: 🎡 add venv setup

Author: scnsh

.github/workflows/python-ci.yml

@@ -16,11 +16,14 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.11"
+        python-version: "3.13"
 
     - name: Set up uv
       uses: astral-sh/setup-uv@v1
 
+    - name: Create virtual environment
+      run: uv venv -p 3.13
+
     - name: Install dependencies
       run: uv pip install .[dev]