apt source thunderbird cd thunderbird-60.0/ cd comm/curl https://bug1482248.bmoattachments.org/attachment.cgi?id=8999262 | patch -p1
dpkg-buildpackage -b
Unfortunately, building on my machine (stable) fails due to unavailable build dependencies, so I cannot say if it really helps.
Would it be possible to add this patch to the debian package (or just switch to the newer upstream version?)?