CompatHelper: bump compat for NamedGraphs to 0.11 for package test, (keep existing compat)

[mtfishman]

This pull request changes the compat entry for the NamedGraphs package from 0.6.8, 0.7, 0.8 to 0.6.8, 0.7, 0.8, 0.11 for package test.
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 59.97%. Comparing base (989984a) to head (1c72b71).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #97      +/-   ##
==========================================
- Coverage   64.53%   59.97%   -4.57%     
==========================================
  Files          21       18       -3     
  Lines         736      727       -9     
==========================================
- Hits          475      436      -39     
- Misses        261      291      +30     

Flag	Coverage Δ
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[mtfishman]

Superseded by #102 — same compat bump, opened by ITensorBot under the new automation account. Closing as duplicate.