deps: bump minimum icu version to 64

Bump minimum version of ICU needed to build node to 64.

Refs: https://github.com/v8/v8/commit/ccbe3d07fbac807e15c524257f3e79e04492f9cf

PR-URL: https://github.com/nodejs/node/pull/27375


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>