fix: CI

Author: AlejandroFernandezLuces

.github/workflows/run_mapdl_tests.yml

@@ -35,7 +35,7 @@ jobs:
     - name: Install uv and create venv
       run: |
         python -m pip install --upgrade pip
-        pip install uv
+        python -m pip install uv
 
     - name: Install project dependencies
       run: |