Bump pyriemann from 0.3 to 0.4

Bumps [pyriemann](https://github.com/pyRiemann/pyRiemann) from 0.3 to 0.4.
- [Release notes](https://github.com/pyRiemann/pyRiemann/releases)
- [Changelog](https://github.com/pyRiemann/pyRiemann/blob/master/doc/whatsnew.rst)
- [Commits](pyRiemann/pyRiemann@v0.3...v0.4)

---
updated-dependencies:
- dependency-name: pyriemann
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

setup.py

@@ -33,7 +33,7 @@
       },
       platforms='any',
       python_requires=">=3.7",
-      install_requires=['cython', 'pyriemann==0.3',
+      install_requires=['cython', 'pyriemann==0.4',
                         'qiskit_machine_learning==0.5.0',
                         'qiskit-ibmq-provider==0.20.1',
                         'qiskit-optimization==0.5.0',