S3: `RuntimeError: dictionary changed size during iteration`

[alltilla]

AxoSyslog

Version of AxoSyslog

4.7.1.831.ge087d9b+4.7.1_git20240709

Issue

Exception in thread Thread-3460:
Traceback (most recent call last):
  File "/usr/lib/python3.12/threading.py", line 1073, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.12/threading.py", line 1431, in run
    self.function(*self.args, **self.kwargs)
  File "/usr/lib/syslog-ng/python/syslogng/modules/s3/s3_destination.py", line 352, in __flush_timed_out_s3_objects
    for s3_object in self.s3_objects.values():
RuntimeError: dictionary changed size during iteration