cURL

What's new in this version:

Fixed:
- altsvc: fix host name matching for trailing dots
- cirrus: Update to FreeBSD 12.3
- cirrus: Use pip for Python packages on FreeBSD
- conn: fix typo 'connnection' -> 'connection' in two function names
- cookies: make bad_domain() not consider a trailing dot fine
- curl: free resource in error path
- curl: guard against size_t wraparound in no-clobber code
- CURLOPT_DOH_URL.3: mention the known bug
- CURLOPT_HSTS*FUNCTION.3: document the involved structs as well
- CURLOPT_SSH_AUTH_TYPES.3: fix the default
- data/test376: set a proper name
- GHA/mbedtls: enabled nghttp2 in the build
- gha: build msh3
- gskit: fixed bogus setsockopt calls
- gskit: remove unused function set_callback
- hsts: ignore trailing dots when comparing hosts names
- HTTP-COOKIES: add missing CURLOPT_COOKIESESSION
- http: move Curl_allow_auth_to_host()
- http_proxy/hyper: handle closed connections
- hyper: fix test 357
- Makefile: fix "make ca-firefox"
- mbedtls: bail out if rng init fails
- mbedtls: fix compile when h2-enabled
- mbedtls: fix some error messages
- misc: use "autoreconf -fi" instead buildconf
- msh3: get msh3 version from MsH3Version
- msh3: print boolean value as text representation
- msh3: psss remote_port to MsH3ConnectionOpen
- ngtcp2: add ca-fallback support for OpenSSL backend
- nss: return error if seemingly stuck in a cert loop
- openssl: define HAVE_SSL_CTX_SET_EC_CURVES for libressl
- post_per_transfer: remove the updated file name
- sectransp: bail out if SSLSetPeerDomainName fails
- tests/server: declare variable 'reqlogfile' static
- tests: fix markdown formatting in README
- test{898,974,976}: add 'HTTP proxy' keywords
- tls: check more TLS details for connection reuse
- url: check SSH config match on connection reuse
- urlapi: address (harmless) UndefinedBehavior sanitizer warning
- urlapi: reject percent-decoding host name into separator bytes
- x509asn1: make do_pubkey handle EC public keys