devel/robin-map: update to v1.4.1

ChangeLog: https://github.com/Tessil/robin-map/releases

• Add a CMake TSL_ROBIN_MAP_ENABLE_INSTALL option to explicitly enable/disable the install target
• Move to C++17 dropping C++11 support
• Bump cmake_minimum_required version to 3.5
• Fix load threshold on deserialization
• The current version computes load using max_load_factor() without first setting m_bucket_count (default 0) leading to threshold 0, which triggers rehash (and size increase) on first insert.
• Recompute the threshold after setting correct bucket count to avoid this.
• Use inline constexpr for PRIMES and MOD_PRIME arrays

PR: 292035
Reported by: FreeBSD@ShaneWare.Biz