Add support for ipython9

[jenshnielsen]

Avoid private import and use non deprecated run_line_magic

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 69.39%. Comparing base (c7a622c) to head (7d73640).
Report is 20 commits behind head on main.

Files with missing lines	Patch %	Lines
src/qcodes/logger/logger.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6925   +/-   ##
=======================================
  Coverage   69.39%   69.39%           
=======================================
  Files         341      341           
  Lines       31399    31399           
=======================================
  Hits        21788    21788           
  Misses       9611     9611           

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