feat: Wrap read_event in exception handling

[ja5087]

Thanks for the useful tool! We are currently seeing rare errors from the read_events thread, probably due to occasional network interruptions/container restarts/whatnot.
When this occurs, an uncaught exception bubbles up to the global scope and this is difficult for us to manage using conventional log/monitoring systems.

For reference we are seeing the following error:

Exception in thread Thread-4 (read_events):
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
  File "/usr/local/lib/python3.11/threading.py", line 982, in run
    self._target(*self._args, **self._kwargs)
  File "/app/.venv/lib/python3.11/site-packages/devcycle_python_sdk/managers/sse_manager.py", line 34, in read_events
    for event in self.client.all:
  File "/app/.venv/lib/python3.11/site-packages/ld_eventsource/sse_client.py", line 217, in all
    raise error
  File "/app/.venv/lib/python3.11/site-packages/ld_eventsource/sse_client.py", line 189, in all
    for ec in reader.events_and_comments:
  File "/app/.venv/lib/python3.11/site-packages/ld_eventsource/reader.py", line 74, in events_and_comments
    for line in self._lines_source:
  File "/app/.venv/lib/python3.11/site-packages/ld_eventsource/reader.py", line 21, in lines_from
    for chunk in chunks:
  File "/app/.venv/lib/python3.11/site-packages/urllib3/response.py", line 1063, in stream
    yield from self.read_chunked(amt, decode_content=decode_content)
  File "/app/.venv/lib/python3.11/site-packages/urllib3/response.py", line 1219, in read_chunked
    self._update_chunk_length()
  File "/app/.venv/lib/python3.11/site-packages/urllib3/response.py", line 1149, in _update_chunk_length
    raise ProtocolError("Response ended prematurely") from None
urllib3.exceptions.ProtocolError: Response ended prematurely

[ja5087]

@jonathannorris Could you take a look? We're working on rolling out DevCycle at our organization and this is a major blocker for us. Thank you!

[jonathannorris]

@ja5087 Thanks for the PR, working on getting it merged. We seem to have some issues with our Test Harness running with PRs from external folks, I copied the PR changes over here: #86

[jonathannorris]

@ja5087 https://github.com/DevCycleHQ/python-server-sdk/releases/tag/v3.11.1 is released with the fix.

[ja5087]

Thanks @jonathannorris for the quick fix!
Looking forward to deploying this on our end.