update venv dir

Author: SvenKlaassen

.github/workflows/did_sim.yml

@@ -61,7 +61,7 @@ jobs:
 
     - name: Install Monte-Cover
       run: |
-        uv sync --project monte-cover/pyproject.toml
+        uv sync --project monte-cover/pyproject.toml --venv .venv
 
     - name: Install DoubleML from correct branch
       run: |