Deprecation warning in examples

[terop]

Examples (and some code too) use the asyncio.get_event_loop().run_until_complete() function call chain to run asynchronous functions.
With Python 3.12 a DeprecationWarning is emitted: ruuvitag-sensor/examples/get_async_bleak.py:18: DeprecationWarning: There is no current event loop. Python get_event_loop() documentation recommends to either use get_running_loop() or asyncio.run(). Using get_running_loop() results in the below error so it is not a straightforward replacement.

$ python3 examples/get_async_bleak.py
Traceback (most recent call last):
  File "<redacted>/ruuvitag-sensor/examples/get_async_bleak.py", line 18, in <module>
    asyncio.get_running_loop().run_until_complete(main())
    ^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: no running event loop

I am wondering what would be the best way to fix the DeprecationWarning.
There is no rush to fix this but fixing this before the call results in an error would be advisable.

Environment:

• OS: Gentoo
• ruuvitag_sensor package version: master (2.3.1)
• RuuviTag firmware version: not relevant
• Data format: not relevant