dns/nsd: Update to 4.11.1

ChangeLog: https://www.nlnetlabs.nl/news/2025/Jan/18/nsd-4.11.1-released/

BUG FIXES:

• Fix #415: Fix out of tree builds.
• Fix #414: XoT interoperability with BIND and Knot
• Fix #421: old-main can quit before the reload process received

r* om old-main that it is done on the reload_listener pipe.
h* anks Otto Retter.

• Fix whitespace in comment.
• Fix #424: Stalled updates after corrupt transfer.

PR: 284156
Reported by: jaap@NLnetLabs.nl (maintainer)