feat(lab): don't restrict py-torch version

site-config/ebrainslab/packages.yaml

@@ -10,8 +10,6 @@ packages:
         # EM: +X fixes build for collab
         require: "@4.3.0+X"
     py-torch:
-        # ECM: keep at latest w.r.t. tracked upstream spack
-        version: [1.11.0]
         # ECM: No cuda nor rocm in collab VMs.
         #      I did not try to minimize the specification any further.
         variants: [~cuda~rocm~valgrind~mkldnn~mpi~gloo+tensorpipe~onnx_ml]