nghttp2 1.62.1 rpms released and added to EL7, EL8 and EL9 platforms.
At the same time please note that we already build nghttp2 for EL7 and EL8 since 1.61.0 with patches that allow c-ares 1.10 usage, as c-ares 1.16 is the minimum supported version.
nghttp2 requires C++-20 and is built with GCC 13 on EL8 and EL9.
UPD. EL7 platform is built with clang 15.