[Merge] ~nteodosio/update-manager:b-proerror into update-manager:ubuntu/bionic

[Nathan Teodosio]

Tests passed for autopkgtest: https://autopkgtest.ubuntu.com/results/autopkgtest-bionic-nteodosio-rebuilds/bionic/amd64/u/update-manager/20240910_100859_11352@/log.gz
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https://code.launchpad.net/~nteodosio/update-manager/+git/update-manager/+merge/469197
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