Boost.MySQL 1.87 and the new Boost citizens

https://cppalliance.org/ruben/2025/01/06/Ruben2024Q4Update.html

In Boost.MySQL 1.87, the type‑erased any_connection, with_params for one‑off queries, built‑in diagnostics, and a connection‑pool API are introduced, extensive async‑oriented documentation is updated, and MQTT5 and Hash2 libraries are added to Boost.