Remove custom createLock method in BaseLogHandler

[danigm]

This patch removes the override of createLock method so this class will use the default logging.Handler method.

The tests are failing for python 3.13 because in this version there's a direct usage of self.lock instead of calling self.acquire(): https://github.com/python/cpython/blob/3.13/Lib/logging/init.py#L1025-L1026

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[EpicWink]

To keep the current behaviour (of not synchronising handling), you instead may want to set lock to some new dummy value, which implements the threading.Lock interface. For Python 3.12 and below compatibility, you will need to implement __enter__, __exit__, acquire, release, _at_fork_reinit

[bjorn-einar-bjartnes-4ss]

👍 We were affected by this, causing tests to fail at Python 3.13. I tried to add these changes to the package directly in the project, and then things works again. Any idea of when this will be officially released in the public package?