Update base miner code to fix Server.serve error

[tobiashomie]

This PR fixes the following error:

 Exception in thread Thread-3 (run):
2|server  | Traceback (most recent call last):
2|server  |   File "/usr/local/lib/python3.10/dist-packages/nest_asyncio.py", line 27, in run
2|server  |     loop = asyncio.get_event_loop()
2|server  |   File "/usr/local/lib/python3.10/dist-packages/nest_asyncio.py", line 45, in _get_event_loop
2|server  |     loop = events.get_event_loop_policy().get_event_loop()
2|server  |   File "/usr/lib/python3.10/asyncio/events.py", line 656, in get_event_loop
2|server  |     raise RuntimeError('There is no current event loop in thread %r.'
2|server  | RuntimeError: There is no current event loop in thread 'Thread-3 (run)'.
2|server  | During handling of the above exception, another exception occurred:
2|server  | Traceback (most recent call last):
2|server  |   File "/usr/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
2|server  |     self.run()
2|server  |   File "/usr/lib/python3.10/threading.py", line 953, in run
2|server  |     self._target(*self._args, **self._kwargs)
2|server  |   File "/usr/local/lib/python3.10/dist-packages/uvicorn/server.py", line 61, in run
2|server  |     return asyncio.run(self.serve(sockets=sockets))
2|server  |   File "/usr/local/lib/python3.10/dist-packages/nest_asyncio.py", line 31, in run
2|server  |     _patch_loop(loop)
2|server  |   File "/usr/local/lib/python3.10/dist-packages/nest_asyncio.py", line 175, in _patch_loop
2|server  |     raise ValueError('Can\'t patch loop of type %s' % type(loop))
2|server  | ValueError: Can't patch loop of type <class 'uvloop.Loop'>
2|server  | /usr/lib/python3.10/threading.py:1018: RuntimeWarning: coroutine 'Server.serve' was never awaited
2|server  |   self._invoke_excepthook(self)
2|server  | RuntimeWarning: Enable tracemalloc to get the object allocation traceback

Co-authored-by: @robertalanm

[tobiashomie]

@robertalanm can you please check this?