Given how old bionic is, it seems unlikely that we would upload the full 1.4.7 release to bionic, however I'll leave a bugtask open for it just in case.
More likely, if there are *specific* commits/patches/fixes from 1.4.7 worth backporting, you can propose them via the SRU process. For that, each fix would need to have a reproducer test case defined and an impact statement. See: https://wiki.ubuntu.com/StableReleaseUpdates
Given how old bionic is, it seems unlikely that we would upload the full 1.4.7 release to bionic, however I'll leave a bugtask open for it just in case.
More likely, if there are *specific* commits/ patches/ fixes from 1.4.7 worth backporting, you can propose them via the SRU process. For that, each fix would need to have a reproducer test case defined and an impact statement. See: https:/ /wiki.ubuntu. com/StableRelea seUpdates