[Merge] ~renanrodrigo/update-notifier:esm-cache-update-bionic into update-notifier:bionic

[Christian Ehrhardt ]

Lunar upload built fine ...

Latest version matches git
 update-notifier | 3.192.1.15     | bionic-updates   | source, amd64, arm64, armhf, i386, ppc64el, s390x

All checks fine (as they were on Lunar) and it was pre-acked by Julian (thanks!).
Merging in git and sponsoring to -unapproved
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https://code.launchpad.net/~renanrodrigo/update-notifier/+git/update-notifier/+merge/435294
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