fix(py-tvb-widgets): relax VTK version dependency

Pinned dependency on vtk@9.2.6 (that should be avoided anyway) conflicts with gcc@13. vtk@9 was selected as a lower limit to avoid using older versions since compatibility has not been tested.

packages/py-tvb-widgets/package.py

@@ -47,8 +47,7 @@ class PyTvbWidgets(PythonPackage):
     depends_on('py-traitlets@5.7.1:', type=('build', 'run'))
     depends_on('py-toml', type=('build', 'run'))
     depends_on('py-bokeh', type=('build', 'run'))
-    depends_on('vtk@=9.2.6', type=('build', 'run'))
-
+    depends_on('vtk@9:9.3', type=('build', 'run'))
 
     depends_on('py-pytest', type='test')
     depends_on('py-pytest-mock', type='test')