Add kernel paths for qubits in dummy.yml

[Jacfomg]

This was needed to test the update kernels. Ideally it should generate some files in that folder and remove them after the tests.

Checklist:

• [ ] Reviewers confirm new code works as expected.
• [ ] Tests are passing.
• [ ] Coverage does not decrease.
• [ ] Documentation is updated.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (47d1d55) 62.68% compared to head (db31a7f) 62.68%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #752 +/- ## ======================================= Coverage 62.68% 62.68% ======================================= Files 47 47 Lines 5930 5931 +1 ======================================= + Hits 3717 3718 +1 Misses 2213 2213 ``` | [Flag](https://app.codecov.io/gh/qiboteam/qibolab/pull/752/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/qiboteam/qibolab/pull/752/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | `62.68% <100.00%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam#carryforward-flags-in-the-pull-request-comment) to find out more.

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[Jacfomg]

Not needed with #758