CompatHelper: bump compat for Turing to 0.31 for package ppl, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Turing package from 0.24, 0.25 - 0.29, 0.30 to 0.24, 0.25 - 0.29, 0.30, 0.31 for package ppl.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.26%. Comparing base (f4473ef) to head (516e5b5).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #397       +/-   ##
==========================================
- Coverage   96.95%   0.26%   -96.70%     
==========================================
  Files          12      12               
  Lines         394     380       -14     
==========================================
- Hits          382       1      -381     
- Misses         12     379      +367     

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