MDL-87950: Allow installation of 'insecure' packages

[andrewnicols]

We have to do this for now until we make Composer our authoritative source and allow it to perform version bumps.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.12%. Comparing base (0f92c9d) to head (3bd1844).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #168   +/-   ##
=======================================
  Coverage   63.12%   63.12%           
=======================================
  Files          54       54           
  Lines        1752     1752           
=======================================
  Hits         1106     1106           
  Misses        646      646           

Flag	Coverage Δ
behat_bisect_test	40.01% <ø> (ø)
behat_test	41.51% <ø> (ø)
phpunit_bisect_test	33.94% <ø> (ø)
phpunit_test	35.04% <ø> (ø)
postjobs_test	32.33% <ø> (ø)
runner_test	15.75% <ø> (ø)

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