Merge "Upgrade curl to curl-7_78_0" am: a883f21446 am: ef704dd8b1 am: 50060f96e5

Original change: https://android-review.googlesource.com/c/platform/external/curl/+/1792488

Change-Id: I72bc255ef093678e5b6174af70e7a1ae5203bff8