[RELEASE] Released version 2.3.0

Released version 2.3.0 with the following main changes :
    - CLEANUP: pattern: remove unused entry "tree" in pattern.val
    - BUILD: ssl: use SSL_CTRL_GET_RAW_CIPHERLIST instead of OpenSSL versions
    - BUG/MEDIUM: filters: Don't try to init filters for disabled proxies
    - BUG/MINOR: proxy/server: Skip per-proxy/server post-check for disabled proxies
    - BUG/MINOR: checks: Report a socket error before any connection attempt
    - BUG/MINOR: server: Set server without addr but with dns in RMAINT on startup
    - MINOR: server: Copy configuration file and line for server templates
    - BUG/MEDIUM: mux-pt: Release the tasklet during an HTTP upgrade
    - BUILD: ssl: use HAVE_OPENSSL_KEYLOG instead of OpenSSL versions
    - MINOR: debug: don't count free(NULL) in memstats
    - BUG/MINOR: filters: Skip disabled proxies during startup only
    - MINOR: mux_h2: capitalize frame type in stats
    - MINOR: mux_h2: add stat for total count of connections/streams
    - MINOR: stats: do not display empty stat module title on html
    - BUG/MEDIUM: stick-table: limit the time spent purging old entries
    - BUG/MEDIUM: listener: only enable a listening listener if needed
    - BUG/MEDIUM: listener: never suspend inherited sockets
    - BUG/MEDIUM: listener: make the master also keep workers' inherited FDs
    - MINOR: fd: add fd_want_recv_safe()
    - MEDIUM: listeners: make use of fd_want_recv_safe() to enable early receivers
    - REGTESTS: mark abns_socket as working now
    - CLEANUP: mux-h2: Remove the h1 parser state from the h2 stream
    - MINOR: sock: add a check against cross worker<->master socket activities
    - CI: github actions: limit OpenSSL no-deprecated builds to "default,bug,devel" reg-tests
    - BUG/MEDIUM: server: make it possible to kill last idle connections
    - MINOR: mworker/cli: the master CLI use its own applet
    - MINOR: ssl: define SSL_CTX_set1_curves_list to itself on BoringSSL
    - BUILD: ssl: use feature macros for detecting ec curves manipulation support
    - DOC: Add dns as an available domain to show stat
    - BUILD: makefile: usual reorder of objects for faster builds
    - DOC: update INSTALL to mention that TCC is supported
    - DOC: mention in INSTALL that haproxy 2.3 is a stable version
    - MINOR: version: mention that it's stable now
4 files changed