[release-1.6] Bump the Downloads stdlib from 1b456c6 (v1.4.2) to b07b4cf (v1.4.3)#42815

KristofferC merged 1 commit intobackports-release-1.6JuliaLang/julia:backports-release-1.6from

dpa/1.6-downloads-v1.4.3JuliaLang/julia:dpa/1.6-downloads-v1.4.3Copy head branch name to clipboard