CompatHelper: bump compat for ComponentArrays to 0.15, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the ComponentArrays package from 0.9, 0.10, 0.11, 0.12, 0.13, 0.14 to 0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15. 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-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.07% :tada:

Comparison is base (fc723a7) 90.09% compared to head (f615c47) 90.17%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #95 +/- ## ========================================== + Coverage 90.09% 90.17% +0.07% ========================================== Files 19 19 Lines 2696 2696 ========================================== + Hits 2429 2431 +2 + Misses 267 265 -2 ``` [see 2 files with indirect coverage changes](https://app.codecov.io/gh/JuliaControl/RobustAndOptimalControl.jl/pull/95/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaControl)

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