migrate cc-utils actions/workflows from @master to @v1

[ccwienk]

Switch references to cc-utils
actions and reusable workflows from @master to @v1.

Motivation

v1 is the intended stable branch for downstream users. All internal cross-references
are pinned by commit digest, ensuring a consistent, self-contained snapshot. Coverage
(e.g. pre-qualification) will increase over time.

master remains the development branch and continues to work, but is not intended for
downstream consumption.

See the Reuse and Branching Model for details.

[dguendisch]

/lgtm
/approve

[gardener-prow]

LGTM label has been added.

Details

Git tree hash: ad93ef5bbc79d3f854fcd62275f91500bedd59ea

[dguendisch]

/assign @vlerenc

[gardener-prow]

[APPROVALNOTIFIER] This PR is APPROVED

Approval requirements bypassed by manually added approval.

This pull-request has been approved by: dguendisch

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Details

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• OWNERS

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[gardener-prow]

Adding label do-not-merge/contains-merge-commits because PR contains merge commits, which are not allowed in this repository.
Use git rebase to reapply your commits on top of the target branch. Detailed instructions for doing so can be found here.

Details

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[gardener-prow]

New changes are detected. LGTM label has been removed.