[moz-nss-nspr] Cron <kuix at kuix-cloud> $HOME/watch-hg/announce/announce.sh mailing

[Automatic Mozilla, NSS and NSPR version announcements]

News: Mozilla, NSPR and/or NSS library versions changed.
================================================================
The Mozilla version of branch mozilla-esr60 changed from 60.6.4 to 60.7.0
================================================================
If you would like to see a summary of library versions being watched by this robot, visit https://kuix.de/mozilla/versions