Release v1.25.6

What’s Changed

• modify images to use registry.k8s.io by @zetaab in https://github.com/kubernetes/cloud-provider-openstack/pull/2172

• update helm github actions and versions release-1.25 by @zetaab in https://github.com/kubernetes/cloud-provider-openstack/pull/2179

• [occm]: fix blackhole route atomic delete logic (1.25 cherry-pick) by @kayrus in https://github.com/kubernetes/cloud-provider-openstack/pull/2258

• [release-1.25] [manila-csi-plugin]: Implement automatic topology awareness for Manila share provisioning by @k8s-infra-cherrypick-robot in https://github.com/kubernetes/cloud-provider-openstack/pull/2262

• Update tags and vendor for 1.25 by @zetaab in https://github.com/kubernetes/cloud-provider-openstack/pull/2275

Full Changelog: https://github.com/kubernetes/cloud-provider-openstack/compare/v1.25.5…v1.25.6