v0.15.3

[external-dns-management]

✨ New Features

• [USER] Added support for proxy for HTTP Transport for Openstack Designate Provider (gardener/external-dns-management#304, @sdputurn)

🏃 Others

• [OPERATOR] Updated controller-manager-library dependency. (gardener/external-dns-management#305, @MartinWeindel)
• [OPERATOR] Updated builder image from golang:1.20.2 to golang:1.20.4 (gardener/external-dns-management#305, @MartinWeindel)