⬆️🩹 Update mqt-core with a fix for ancillary qubit handling (#340)

## Description

This PR updates `mqt-core` with a new fix (cda-tum/mqt-core#495) for a
small bug that resulted in two circuits that were acting on the same
number of "primary" qubits to report that circuits differed in their
number of qubits.

## Checklist:

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- [x] The pull request only contains commits that are related to it.
- [x] I have added appropriate tests and documentation.
- [x] I have made sure that all CI jobs on GitHub pass.
- [x] The pull request introduces no new warnings and follows the
project's style guidelines.

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Signed-off-by: burgholzer <[email protected]>