[Release] v0.6.4

What's Changed

• [release-0.6] 🐛 implement conversion for OpenStackClusterTemplate CRD by @k8s-infra-cherrypick-robot in #1250
• [release-0.6] 🐛 Fix logger arguments by @k8s-infra-cherrypick-robot in #1293
• 🌱 remove apricote from reviewers by @apricote in #1336

Full Changelog: v0.6.3...v0.6.4