Update debugger documentation for 1.23.12

[gregg-miskelly]

This updates the changelog and the debugger documentation for the 1.23.12 release.

[codecov]

Codecov Report

Merging #4500 (ac451df) into master (b2c8deb) will decrease coverage by 0.11%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4500      +/-   ##
==========================================
- Coverage   69.08%   68.97%   -0.12%     
==========================================
  Files         109      109              
  Lines        4325     4325              
  Branches      756      756              
==========================================
- Hits         2988     2983       -5     
- Misses       1140     1145       +5     
  Partials      197      197              

Flag	Coverage Δ
integration	52.32% <ø> (-0.09%)	⬇️
unit	84.14% <ø> (ø)

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Impacted Files	Coverage Δ
src/omnisharp/fileOperationsResponseEditBuilder.ts	61.53% <0.00%> (-23.08%)	⬇️
src/observers/WarningMessageObserver.ts	100.00% <0.00%> (+5.00%)	⬆️

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