[gardener-extension-shoot-dns-service]

🏃 Others

• [OPERATOR] vendoring gardener/gardener@v1.21.0 (#46, @MartinWeindel)
• [OPERATOR] Add system test shootdns-test (#44, @MartinWeindel)

[external-dns-management]

🐛 Bug Fixes

• [USER] Deduplication of targets if mutiple CNAME targets are provided (gardener/external-dns-management#171, @MartinWeindel)
• [OPERATOR] ensure stable provider result in method DNSProviders.LookupFor (gardener/external-dns-management#172, @MartinWeindel)

🏃 Others

• [OPERATOR] Added external_dns_management_requests_per_zone and external_dns_management_zone_cache_discardings metrics (gardener/external-dns-management#173, @MartinWeindel)