Since commit d3cbee99e3 (macOS: Prefer building with system-provided
curl, 2024-05-09, v3.30.0-rc1~130^2~1) CMake uses the macOS-provided
curl, which uses the LibreSSL backend by default. This exposes us to
curl issue 12525, created and fixed by the following upstream curl
commits:
* commit `bec0c5bbf` (openssl: switch to modern init for
LibreSSL 2.7.0+, 2023-08-07, `curl-8_3_0~201`)
* commit `9f2d2290d` (openssl: re-match LibreSSL deinit with init,
2023-12-15, `curl-8_6_0~219`)
Work around the bug by preferring the secure-transport backend by
default on the problematic versions of curl.
f2596dfa0e