Try to fix ipython.

mu/wheels/__init__.py

@@ -42,9 +42,7 @@ class WheelsBuildError(WheelsError):
     ("flask", ("flask==2.0.3", "Werkzeug<3.0.0")),
     # The version of ipykernel here should match to the version used by
     # qtconsole at the version specified in setup.py
-    # ipykernel max ver added for macOS 10.13 compatibility, min taken
-    # from setup.py. This is version has to mirror the one from setup.py
-    ("ipykernel", ("ipykernel>=5.5.6,<6",)),
+    ("ipykernel", ("ipykernel>=5.5.6",)),
 ]
 
 

setup.py

@@ -37,11 +37,13 @@
     # FIXME: Needed for qtconsole, this is the latest wheel in armv7l for
     # Python 3.7 (Buster), otherwise it tries to build from source and fails.
     "pyzmq<=26.0.3",
-    # ipykernel has to be < v6 for macOS 10.13 compatibility (v6 depends on
-    # debugpy package), v5.5.6 resolves issue ipython/ipykernel#759.
-    # Full line can be removed after Mu v1.3 release as PyQt6 drops old macOS.
+    # We are using an internal method of jupyter_client, that changed in v7
+    # QtKernelManager._launch_kernel() returning a KernelProvisionerBase
+    # https://github.com/jupyter/jupyter_client/commit/516d9df270b2e4603ee0ecd986554cb5fe1c2940
+    "jupyter-client<7",
+    # ipykernel v5.5.6 resolves issue ipython/ipykernel#759.
     # ipykernel version has to be mirrored in mu/wheels/__init__.py
-    "ipykernel>=5.5.6,<6",
+    "ipykernel>=5.5.6",
     "qtconsole~=5.4",
     # In Python 3.12 the deprecated 'imp' module was removed from the stdlib.
     # ipykernel only moved to importlib in v6.10, so this is a "forward-port"