Log Message:
curl: updated to 8.9.1

Changes in 8.9.1

Bugfixes:

cmake: detect `libssh` via `pkg-config`
cmake: detect `nettle` when building with GnuTLS
cmake: drop `if(PKG_CONFIG_FOUND)` guard for `pkg_check_modules()`
configure: limit `__builtin_available` test to Darwin
connect: fix connection shutdown for event based processing
contrithanks.sh: use -F with -v to match lines as strings
curl: more defensive socket code for --ip-tos
CURLOPT_SSL_CTX_FUNCTION.md: mention CA caching
CURLSHOPT_SHARE.md: mention sessions/cookies as not thread-safe
example/multi-uv: remove the use of globals
ftpserver.pl: make POP3 LIST serve content from the test file
GHA/windows: increase timeout for vcpkg build step
lib: survive some NULL input args
macos: fix Apple SDK bug workaround for non-macOS targets
misc: cleanup after removing years from copyright
os400: build cli manual.
os400: workaround an IBM ASCII run-time library bug
RELEASE-PROCEDURE.md: remove the initial build step
runtests: fold timing details with GHA, sync `-r` tflags
tests: provide FTP directory contents in the test file
tidy-up: URL updates
TODO: thread-safe sharing
transfer: speed limiting fix for 32bit systems
vtls: avoid forward declaration in MultiSSL builds
wolfSSL: allow wolfSSL's implementation of kyber to be used
wolfssl: avoid calling get_cached_x509_store if store is uncachable
wolfssl: CA store share fix
x509asn1: unittests and fixes for gtime2str