Bug#1019296: tt-rss - build-dependencies unsatisfiable

[Peter Michael Green]

Package: tt-rss
Version: 21~git20210204.b4cbc79+dfsg-1
Serverity: serious
Tags: bookworm, sid
tt-rss build-depends on libjs-prototype (= 1.7.1-3.1) but 
testing/unstable has version 1.7.3-1