Feat/faster macos runners

[vinitkumar]

• Change to macos-latest-xl
• Move from flake8, isort to ruff

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.02 ⚠️

Comparison is base (fe02172) 94.27% compared to head (d365950) 94.26%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #171      +/-   ##
==========================================
- Coverage   94.27%   94.26%   -0.02%     
==========================================
  Files           6        6              
  Lines         559      558       -1     
==========================================
- Hits          527      526       -1     
  Misses         32       32              

Impacted Files	Coverage Δ
json2xml/dicttoxml.py	89.28% <ø> (ø)
json2xml/utils.py	85.71% <ø> (-0.34%)	⬇️
tests/test_json2xml.py	99.10% <100.00%> (ø)

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