Prefer `pkg_check_modules()` over `pkg_search_module()`.
`pkg_check_modules()` logs a line when there is a hit, and also warnings
if a sub-dependency is missing. In `QUIET` mode, both are silent.
The extra info is useful to see if a detection happened via
`pkg-config`.
Keep `pkg_search_module()` in `FindGSS`. We pass two dependencies
there and we want to keep stopping on the first one.
Partially reverts c2889a7b41#14388Closes#14573
- brotli, c-ares, libpsl, libssh2, mbedtls, rustls:
Use `pkg-config` for path hints and version info. Syncing them up with
the rest of Find modules.
- GHA/macos: force-disable libssh2 with cmake to sync with autotools.
After this patch, cmake auto-detects libssh2 in this job.
Closes#14545
