dns/unbound: Security update to 1.13.0
- Sort options and port_docs while here
PR: 251563
Submitted by: Jaap Akkerhuis <jaap nlnetlabs nl> (maintainer)
Approved by: maintainer (implicit)
MFH: 2020Q4
Security: 388ebb5b-3c95-11eb-929d-d4c9ef517024