cherry picked from upstream to fix a CI failure. Something changed on 20.04 so the version of mysqlclient previously specified was no longer installable. 629a0ff fixed it upstream, so I cherry-picked that in. There were a few other library upgrades pulled in as well that caused other problems (since we haven't got all the updates from upstream). I've made some small fixes for those.
cherry picked from upstream to fix a CI failure. Something changed on 20.04 so the version of
mysqlclientpreviously specified was no longer installable. 629a0ff fixed it upstream, so I cherry-picked that in. There were a few other library upgrades pulled in as well that caused other problems (since we haven't got all the updates from upstream). I've made some small fixes for those.