base-buster: Add bibliothecary for dependency parsing in swh indexer
Install bibliothecary in the base buster image for dependency parsing to work in swh indexer.
We need to build ruby from source for this since Debian 10 has ruby 2.5 (mentioned in https://wiki.debian.org/Ruby). But bibliothecary needs ruby >= 2.7 which isn't available for Debian 10
Edited by Kumar Shivendu