CompatHelper: add new compat entry for ComponentArrays in [weakdeps] at version 0.15 for package ControlSystemsBase, (keep existing compat)

[github-actions]

This pull request sets the compat entry for the ComponentArrays package to 0.15 for package ControlSystemsBase.
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.
Note: Consider registering a new release of your package immediately after merging this PR, as downstream packages may depend on this for tests to pass.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.42%. Comparing base (227f703) to head (98b75aa).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #984   +/-   ##
=======================================
  Coverage   92.42%   92.42%           
=======================================
  Files          41       41           
  Lines        4990     4990           
=======================================
  Hits         4612     4612           
  Misses        378      378           

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