Changes since version 2.5.5 :

Christopher Faulet (4):
      BUG/MINOR: rules: Initialize the list element when allocating a new rule
      DOC: config: Explictly add supported MQTT versions
      BUG/MEDIUM: mux-fcgi: Properly handle return value of headers/trailers parsing
      BUG/MEDIUM: mux-h1: Properly detect full buffer cases during message parsing

Dhruv Jain (1):
      MEDIUM: mqtt: support mqtt_is_valid and mqtt_field_value converters for MQTTv3.1

Ilya Shipitsin (2):
      CI: github actions: switch to LibreSSL-3.5.1
      REGTESTS: ssl: use X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY for cert check

Lukas Tribus (1):
      DOC: reflect H2 timeout changes

William Lallemand (10):
      BUG/MINOR: tools: fix url2sa return value with IPv4
      BUG/MINOR: httpclient/lua: stuck when closing without data
      MINOR: server: export server_parse_sni_expr() function
      BUG/MINOR: httpclient: send the SNI using the host header
      BUILD: httpclient: fix build without SSL
      BUG/MINOR: server/ssl: free the SNI sample expression
      BUG/MINOR: httpclient: only check co_data() instead of HTTP_MSG_DATA
      BUG/MINOR: httpclient: process the response when received before the end of the request
      BUG/MINOR: httpclient: CF_SHUTW_NOW should be tested with channel_is_empty()
      BUG/MINOR: tools: url2sa reads too far when no port nor path

Willy Tarreau (5):
      BUG/MEDIUM: mux-h1: only turn CO_FL_ERROR to CS_FL_ERROR with empty ibuf
      BUG/MEDIUM: stream-int: do not rely on the connection error once established
      BUG/MEDIUM: trace: avoid race condition when retrieving session from conn->owner
      MEDIUM: mux-h2: slightly relax timeout management rules
      BUG/MEDIUM: mux-h2: make use of http-request and keep-alive timeouts