[opensuse-buildservice] issue with OBS certificates

Hi, this morning, I get warnings that the file repomd.xml from some repos has been signed with an unknown key. devel_languages_go AF4CFE4D307D7BF9 devel_languages_python 27163A4EEDF0D733 devel_languages_ruby_extensions 9AF0C9A20E9AF123 devel_tools_scm 30A8343A498D5A23 network 62EB1A0917280DDF Packman 45A1D0671ABD1AFB What's gone wrong? Did I miss something? The repo's URLs all start with http://download.opensuse.org/repositories/, and there are several repos that have their repomd.xml signed with the usual key. BTW, I'm not asked to accept a changed key for the repos, so the repo keys should be unchanged, just those files have been signed with other keys. Werner --