fix: avoid cascading on deletion

[nijel]

Proposed changes

This is not really desired, we do not want to delete suscriptions on package removal.

Checklist

• Lint and unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added documentation to describe my feature.
• I have squashed my commits into logic units.
• I have described the changes in the commit messages.

Other information

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.47%. Comparing base (e38a1cc) to head (feec23b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2219   +/-   ##
=======================================
  Coverage   82.47%   82.47%           
=======================================
  Files          30       30           
  Lines        3219     3219           
  Branches      294      294           
=======================================
  Hits         2655     2655           
  Misses        459      459           
  Partials      105      105