Add python3.14 version support

[a3lme]

This PR handles the following asyncio behavioral changes introduced in python3.14:

asyncio.get_event_loop() now raises a RuntimeError if there is no current event loop, and no longer implicitly creates an event loop.

To support 3.14, this PR:

1. Fixes [Python] RuntimeError: no running event loop by checking version of python and use asyncio.new_event_loop()
2. Update dependencies versions for no conflicts with 3.14

[codecov-commenter]

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@@            Coverage Diff             @@
##             main     #509      +/-   ##
==========================================
- Coverage   96.27%   96.10%   -0.17%     
==========================================
  Files          11       11              
  Lines        1074     1079       +5     
  Branches      209      190      -19     
==========================================
+ Hits         1034     1037       +3     
- Misses         19       21       +2     
  Partials       21       21              

Files with missing lines	Coverage Δ
arq/worker.py	97.37% <100.00%> (+0.20%)	⬆️

... and 1 file with indirect coverage changes

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