Relevant bits from the ChangeLog of 3.11.9 (also applies to other versions): gh-115243: Fix possible crashes in collections.deque.index() when the deque is concurrently modified. gh-114572: ssl.SSLContext.cert_store_stats() and ssl.SSLContext.get_ca_certs() now correctly lock access to the certificate store, when the ssl.SSLContext is shared across multiple threads.
cleanup done.