chore(deps): update kubewarden/github-actions action to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
kubewarden/github-actions	action	major	v5.2.0 → v7.0.1

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Release Notes

kubewarden/github-actions (kubewarden/github-actions)

v7.0.1

Compare Source

• fix: Update kwctl-installer signature check to new repo name (#​309)

v7.0.0

Compare Source

• chore: update commit sha to release (#​308)
• feat(attestation): add namespace input for container image path (#​307)
• Remove stale checkout workaround comments (#​301)

v6.0.0

Compare Source

• chore: update commit sha to release github-actions. (#​306)
• feat(container-build,merge-multiarch): add repository-prefix input (#​305)

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