CompatHelper: bump compat for DSP in [weakdeps] to 0.8, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the DSP package from 0.7 to 0.7, 0.8.
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 89.37%. Comparing base (15c4030) to head (abf10f7).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #210   +/-   ##
=======================================
  Coverage   89.37%   89.37%           
=======================================
  Files          10       10           
  Lines        1129     1129           
=======================================
  Hits         1009     1009           
  Misses        120      120           

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