Update balena/open-balena-api Docker tag to v24.3.0

[balena-renovate[bot]]

This PR contains the following updates:

Package	Update	Change
balena/open-balena-api	minor	v24.2.2 -> v24.3.0

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Release Notes

balena-io/open-balena-api (balena/open-balena-api)

### [`v24.3.0`](https://togithub.com/balena-io/open-balena-api/releases/tag/v24.3.0) [Compare Source](https://togithub.com/balena-io/open-balena-api/compare/v24.3.0...v24.3.0) [`4018918`](https://togithub.com/balena-io/open-balena-api/commit/40189188) (Add unique email constraint on user model, 2024-06-10) ### [`v24.3.0`](https://togithub.com/balena-io/open-balena-api/blob/HEAD/CHANGELOG.md#2430---2024-06-11) [Compare Source](https://togithub.com/balena-io/open-balena-api/compare/v24.2.2...v24.3.0) - Add unique email constraint on user model \[Otavio Jacobi]

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