CompatHelper: bump compat for NamedGraphs to 0.7, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the NamedGraphs package from 0.6.9 to 0.6.9, 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 34.85%. Comparing base (8269686) to head (345958f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #4   +/-   ##
=======================================
  Coverage   34.85%   34.85%           
=======================================
  Files           3        3           
  Lines         175      175           
=======================================
  Hits           61       61           
  Misses        114      114           

Flag	Coverage Δ
docs	0.00% <ø> (ø)

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