fix(deps): update module github.com/gophercloud/gophercloud to v1.12.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/gophercloud/gophercloud	v1.11.0 -> v1.12.0

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Release Notes

gophercloud/gophercloud (github.com/gophercloud/gophercloud)

### [`v1.12.0`](https://togithub.com/gophercloud/gophercloud/blob/HEAD/CHANGELOG.md#v1120-2024-05-27) [Compare Source](https://togithub.com/gophercloud/gophercloud/compare/v1.11.0...v1.12.0) - [GH-2979](https://togithub.com/gophercloud/gophercloud/pull/2979) \[v1] CI backports - [GH-2985](https://togithub.com/gophercloud/gophercloud/pull/2985) \[v1] baremetal: fix handling of the "fields" query argument - [GH-2989](https://togithub.com/gophercloud/gophercloud/pull/2989) \[v1] \[CI] Fix portbiding tests - [GH-2992](https://togithub.com/gophercloud/gophercloud/pull/2992) \[v1] \[CI] Fix portbiding tests - [GH-2993](https://togithub.com/gophercloud/gophercloud/pull/2993) \[v1] build(deps): bump EmilienM/devstack-action from 0.14 to 0.15 - [GH-2998](https://togithub.com/gophercloud/gophercloud/pull/2998) \[v1] testhelper: mark all helpers with t.Helper - [GH-3043](https://togithub.com/gophercloud/gophercloud/pull/3043) \[v1] CI: remove Zed from testing coverage

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