Update dependency architect to v5.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
architect (source)	orb	minor	5.3.1 -> 5.4.0

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Release Notes

giantswarm/architect-orb (architect)

### [`v5.4.0`](https://togithub.com/giantswarm/architect-orb/blob/HEAD/CHANGELOG.md#540---2024-08-01) [Compare Source](https://togithub.com/giantswarm/architect-orb/compare/v5.3.1...v5.4.0) ##### Changed - Bump `architect` to v6.16.0. ##### Added - Add `git-tag-prefix` parameter to `push-to-registries` job.

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Configuration

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