OpenSSL v3+ version number not reporting correctly in CMake

[hjmallon]

• I've read Brief overview section and do understand basic concepts. [Yes]

• I've read F.A.Q. section and there is no solution to my problem there. [Yes]

• I've read Code of Conduct, I promise to be polite and will do my best at being constructive. [Yes]

• I've read Reporting bugs section carefully. [Yes]

• I've checked that all the hunter_add_package/find_package API used by me in the example is the same as in documentation. [Yes]

• I'm using latest Hunter URL/SHA1. [Yes]

• I've created SSCCE reproducing the issue:

# CMakeLists.txt

cmake_minimum_required(VERSION 3.5)

include("cmake/HunterGate.cmake")
HunterGate(
    URL "..."
    SHA1 "..."
)

project(foo)

hunter_add_package(OpenSSL)
find_package(OpenSSL CONFIG REQUIRED)

Just trying the new OpenSSL, my version number is coming out as (found version # define OPENSSL_VERSION_MAJOR 3.# define OPENSSL_VERSION_MINOR 1.# define OPENSSL_VERSION_PATCH 0)?

Looking at the CMake code I'm not sure file(STRINGS supports regex capture groups?

See #668