Updated PEP to use set seed (42)

[Alexander-Sol]

PEP was causing variability in the number of psms/proteoforms/peptides reported at 1% Q-Value and PEP Q-Value thresholds. This issue was ultimately caused by a random component in the generation of decoys. That issue is resolved in the newest version of mzLib (1.0.552)

Changes

• Update to mzLib 1.0.552
• Added FastTreeOptions property to the top of the PepAnalysisEngine, which contains seeds and hyperparameters for the BGDT classifier

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.65%. Comparing base (dd5e3b2) to head (329d9e8).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2408   +/-   ##
=======================================
  Coverage   93.64%   93.65%           
=======================================
  Files         141      141           
  Lines       21884    21903   +19     
  Branches     3004     3004           
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+ Hits        20494    20513   +19     
  Misses        938      938           
  Partials      452      452           

Files with missing lines	Coverage Δ
MetaMorpheus/EngineLayer/FdrAnalysis/FdrInfo.cs	100.00% <100.00%> (ø)
...pheus/EngineLayer/FdrAnalysis/PEPAnalysisEngine.cs	95.04% <100.00%> (+0.08%)	⬆️
...eus/TaskLayer/SearchTask/PostSearchAnalysisTask.cs	93.97% <100.00%> (ø)