math/nlopt: Update to 2.10.1

• Fix octave 10.x build
• Fix slsqp constraints count
• Fix build with libstdc++ debug iterators
• Fix PRAXIS evaluations count

Changelog: https://github.com/stevengj/nlopt/compare/v2.10.0...v2.10.1

Reported by: portscout, Repology
MFH: 2026Q1