Renovate: Update module github.com/gophercloud/gophercloud to v1.12.0

[renovate]

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

Compare Source

• GH-2979 [v1] CI backports
• GH-2985 [v1] baremetal: fix handling of the "fields" query argument
• GH-2989 [v1] [CI] Fix portbiding tests
• GH-2992 [v1] [CI] Fix portbiding tests
• GH-2993 [v1] build(deps): bump EmilienM/devstack-action from 0.14 to 0.15
• GH-2998 [v1] testhelper: mark all helpers with t.Helper
• GH-3043 [v1] CI: remove Zed from testing coverage

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[coveralls]

coverage: 84.981%. remained the same
when pulling cf514f6 on renovate/external-dependencies
into 01d47d0 on master.