neon: update to 0.32.1.

Changes in release 0.32.1:
* Fix configure CFLAGS handling in Kerberos detection.
* Various spelling fixes.

Changes in release 0.32.0:
* Interface changes:
 - API and ABI backwards-compatible with 0.27.x and later
 - NE_AUTH_DIGEST now only enables RFC 2617/7616 auth by default;
   to enable weaker RFC 2069 Digest, use NE_AUTH_LEGACY_DIGEST
   (treated as a security enhancement, not an API/ABI break)
* Interface clarifications:
 - ne_auth.h: use of non-ASCII usernames with the ne_auth_creds
   callback type is now rejected for Digest auth since the
   encoding is not specified.  ne_add_auth() can be used instead.
 - ne_request.h: the ne_create_request_fn callback is passed the
   request-target using RFC 7230 terminology
* New interfaces and features:
 - ne_string.h: added ne_strhash(), ne_vstrhash(), ne_strparam()
 - ne_auth.h: added RFC 7616 (Digest authentication) support,
   including userhash=, username*= and SHA-2 algorithms
   (SHA-2 requires GnuTLS/OpenSSL).  added NE_AUTH_LEGACY_DIGEST
 - ne_auth.h: added ne_add_auth() unified auth callback interface,
   accepts (only) UTF-8 usernames, uses a larger password buffer,
   and has different/improved attempt counter semantics.
 - RFC 7617 scoping rules are now applied for Basic authentication.
 - ne_ssl.h: added ne_ssl_cert_hdigest()
 - ne_socket.h: added ne_sock_shutdown()
 - sendmsg()/send() are used with the MSG_NOSIGNAL flag to write to
   sockets on Unix, rather than write()/writev(), avoiding SIGPIPE
 - explicit_bzero() is used where available to clear credentials
* Bug fixes:
 - fixed TLS connection shutdown handling for OpenSSL 3
 - fix various Coverity and cppcheck warnings (Sebastian Reschke)
 - Kerberos library detection uses pkg-config where possible.
 - fix some configure checks on Win32 (Christopher Degawa)
 - fix some configure errors on MacOS (Ryan Schmidt)


(wiz)