Build issue for newer versions with archives hosted on GitHub

[hoppjan]

When I tried building the latest OpenSSL LTS version 3.0.15, the build script failed:

$ ./build-libssl.sh --version=3.0.15 --targets="ios-sim-cross-x86_64 ios-sim-cross-arm64 ios64-cross-arm64 ios64-cross-arm64e"

Build options
  OpenSSL version: 3.0.15
  Targets: ios-sim-cross-x86_64 ios-sim-cross-arm64 ios64-cross-arm64 ios64-cross-arm64e
  iOS SDK: 17.5 (min 12.0)
  macOS SDK: 14.5 (min 10.14)
  macOS SDK (Catalyst): 14.5 (min 10.14)
  watchOS SDK: 10.5 (min 4.0)
  tvOS SDK: 17.5 (min 12.0)
  xrOS SDK: 1.2 (min 1.0)
  Bitcode embedding disabled
  Number of make threads: 8
  Configure options:  no-deprecated
  Build location: /Users/xxxxxxx/yyyyyyy/openssl-apple-hoppjan

Downloading openssl-3.0.15.tar.gz...
An error occurred trying to find OpenSSL 3.0.15 on https://www.openssl.org/source/old/3.0.1/openssl-3.0.15.tar.gz
Please verify that the version you are trying to build exists, check cURL's error message and/or your network connection.

It seems, they have moved the hosting from their own site onto GitHub with v3.0.14:

• the "Downloads" page on the new openssl-library.org has links to GitHub
• the "old" section only hosts up to 3.0.13, which is from January of this year (2 versions behind)

Also, the regex used seems to only allow single digit versions, as the URL contains a "3.0.1" instead of a "3.0.15".

I will continue to debug this issue and hope to have a PR ready for you soon!