GHSA-9jx5-6pgf-crrp: scipy memory leak vulnerability

Ubuntu Security Notice 6226-1 - It was discovered that SciPy did not properly manage memory operations during reference counting. An attacker could possibly use this issue to cause a denial of service. A use-after-free was discovered in SciPy when handling reference counts. An attacker could possibly use this to cause a denial of service. This issue only affected Ubuntu 20.04 LTS.

A refcounting issue which leads to potential memory leak was discovered in scipy commit 8627df31ab in Py_FindObjects() function.