CompatHelper: bump compat for Zygote in [weakdeps] to 0.7, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Zygote package from 0.6 to 0.6, 0.7.
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 88.2%. Comparing base (c9718f3) to head (bed3958).
Report is 2 commits behind head on master.

Additional details and impacted files

@@          Coverage Diff           @@
##           master     #79   +/-   ##
======================================
  Coverage    88.2%   88.2%           
======================================
  Files          19      19           
  Lines        1013    1013           
======================================
  Hits          893     893           
  Misses        120     120           

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