make: Revert to wheel file name with underscore

ci: Disable markdown link checking job on tags

The goal is to avoid the job failing on a deploy routine.

deps: Install gr-dvbs2rx from binary packages

Bump version to 0.4.4 and add changelog

pandoc: Pin pandoc/latex version to 2.16

ci: Update the tested debian and fedora versions

- Update to fedora 33 and 34. It should be 34 and 35 instead, but it
  seems dnf is currently not working on the fedora:35 image.
- Drop Debian stretch and update to test Debian buster and bullseye.

Add table of contents on changelog

Update v0.4.0 release date on the changelog file

satellite v2.3.1

satellite v2.3.0