CI: update workflow file

.github/workflows/examples.yml

@@ -22,6 +22,7 @@ env:
   PYEDB_USE_LEGACY: '1'
   PYEDB_CI_NO_DISPLAY: '1'
   MAIN_PYTHON_VERSION_WINDOWS_SELFHOSTED: '3.9'
+  VTK_OSMESA: 'vtk-osmesa==9.2.20230527.dev0'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -72,6 +73,15 @@ jobs:
           .\.venv\Scripts\Activate.ps1
           pip install --no-cache-dir external/pyaedt[full]
 
+      - name: "Install specific vtk version with OSMesa bundled"
+        run: |
+          .\.venv\Scripts\Activate.ps1
+          pip uninstall vtk -y
+          # Note: the vtk-osmesa used is 9.2.X as 9.3.0 is not working
+          # well with the use of pyvista in our tests atm.
+          # TODO: update once a stable versio is working
+          pip install --extra-index-url https://wheels.vtk.org ${{ env.VTK_OSMESA }}
+
       - name: Execute legacy pyaedt integration examples
         run: |
           . .venv\Scripts\Activate.ps1