[external-dns-management]

🏃 Others

• [OPERATOR] Introduce qualified zone id to avoid clashes on migrating to remote provider. (gardener/external-dns-management#254, @MartinWeindel)
• [OPERATOR] Update dependencies to fix vulnerabilities. (gardener/external-dns-management#253, @brumhard)
• [OPERATOR] Delete cached dnsactivations on deleting DNSOwner object. (gardener/external-dns-management#252, @MartinWeindel)