sysutils/byobu: update to 5.130

From ChangeLog:

• usr/lib/byobu/logo:
  • add Raspbian colors / logo
• usr/lib/byobu/include/select-session.py:
  • Force UTF-8 when attaching in select-session.py
• debian/rules:
  • ignore new pep8 rules around hard tabs and whitespaces, related to bug 1843729
• AUTHORS, CONTRIBUTING, NEWS, README, README.md:
  • Flatten these files into a single README.md
  • Minor updates in the process

PR: 242544
Submitted by: jcoffman@xsecure.io (maintainer)