Add build-infos.json to sha256sums-unsigned-build.txt

In #32768 (moved) we added a build-infos-$os.json file. To make download of this file easier/safer, I think we should add it to sha256sums-unsigned-build.txt.

Trac:
Parent Ticket: #25102 (moved)

added TorBrowserTeam202002R actualpoints::.1 component::applications/tor browser owner::boklm parent::25102 points::.1 priority::medium resolution::fixed severity::normal status::closed tbb-9.5a6 tbb-rbm tbb-update type::task labels

There is a patch for review in my branch bug_33380: https://gitweb.torproject.org/user/boklm/tor-browser-build.git/commit/?h=bug_33380&id=19497b09ae5f68768a1d2690249b51b6fca89b41

Trac:
Actualpoints: N/A to .1
Keywords: TorBrowserTeam202002 deleted, TorBrowserTeam202002R added
Status: assigned to needs_review

That's a good idea. Looks good to me, thanks! Merged on master.

Trac:
Resolution: N/A to fixed
Status: needs_review to closed

Trac:
Keywords: N/A deleted, tbb-9.5a6 added

closed

changed time estimate to 48m

added 48m of time spent

moved to tpo/applications/tor-browser#33380 (closed)