[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.
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Gecko repo--revision on branch comm-beta changed from releases/mozilla-beta--23159c7ee39f9cb1ee182a72d0b3d1afdc6ceba4 (FIREFOX_74_0b6_RELEASE) to releases/mozilla-beta--2277b58b1038c589ea5e7a143108c99c5b3c646a (FIREFOX_74_0b7_RELEASE)
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