CompatHelper: bump compat for Memento to 1, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Memento package from ~1.0, ~1.1, ~1.2 to ~1.0, ~1.1, ~1.2, 1.
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

Merging #44 (805e197) into master (12e8bd9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #44   +/-   ##
=======================================
  Coverage   94.35%   94.35%           
=======================================
  Files           5        5           
  Lines         177      177           
=======================================
  Hits          167      167           
  Misses         10       10           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.