CompatHelper: add new compat entry for ParetoSmooth at version 0.7 for package docs, (keep existing compat)

[github-actions]

This pull request sets the compat entry for the ParetoSmooth package to 0.7 for package docs.
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.
Note: Consider registering a new release of your package immediately after merging this PR, as downstream packages may depend on this for tests to pass.

[github-actions]

ParetoSmooth.jl documentation for PR #119 is available at:
https://TuringLang.github.io/ParetoSmooth.jl/previews/PR119/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.56%. Comparing base (d42362a) to head (07b383f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #119      +/-   ##
==========================================
+ Coverage   85.10%   85.56%   +0.46%     
==========================================
  Files          11       11              
  Lines         376      395      +19     
==========================================
+ Hits          320      338      +18     
- Misses         56       57       +1     

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