docs: sync 4.3.13 changes to 4.4.2

CHANGES-4.4.md

@@ -2,14 +2,52 @@
 
 ## v4.4.2
 
+**NOTE**: v4.4.2 is in sync with: v4.3.13
+
 ### Important changes
 
 * Docker image is based on alpine-3.15.1 (OpenSSL-1.1.1n)
+* For docker image, /opt/emqx/etc has been removed from the VOLUME list,
+  this made it easier for the users to rebuild image on top with changed configs.
 
-### Minor changes
+### Enhancements
 
 * Windows package is built on Erlang/OTP 24
-* Added debian11 build
+
+### Enhancements (synced from v4.3.13)
+
+* CLI `emqx_ctl pem_cache clean` to force purge x509 certificate cache,
+  to force an immediate reload of all certificates after the files are updated on disk.
+* Refactor the ExProto so that anonymous clients can also be displayed on the dashboard [#6983]
+* Force shutdown of processes that cannot answer takeover event [#7026]
+* Support set keepalive via queryString & Body HTTP API.
+* `topic` parameter in bridge configuration can have `${node}` substitution (just like in `clientid` parameter)
+* Add UTF-8 string validity check in `strict_mode` for MQTT packet.
+  When set to true, invalid UTF-8 strings will cause the client to be disconnected. i.e. client ID, topic name. [#7261]
+* Changed systemd service restart delay from 10 seconds to 60 seconds.
+* MQTT-SN gateway supports initiative to synchronize registered topics after session resumed. [#7300]
+* Add load control app for future development.
+* Change the precision of float to 17 digits after the decimal point when formatting a
+  float using payload templates of rule actions. The old precision is 10 digits before
+  this change.
+
+### Bug fixes (synced from v4.3.13)
+
+* Fix the `{error,eexist}` error when do release upgrade again if last run failed. [#7121]
+* Fix case where publishing to a non-existent topic alias would crash the connection [#6979]
+* Fix HTTP-API 500 error on querying the lwm2m client list on the another node [#7009]
+* Fix the ExProto connection registry is not released after the client process abnormally exits [#6983]
+* Fix Server-KeepAlive wrongly applied on MQTT v3.0/v3.1 [#7085]
+* Fix Stomp client can not trigger `$event/client_connection` message [#7096]
+* Fix system memory false alarm at boot
+* Fix the MQTT-SN message replay when the topic is not registered to the client [#6970]
+* Fix rpc get node info maybe crash when other nodes is not ready.
+* Fix false alert level log “cannot_find_plugins” caused by duplicate plugin names in `loaded_plugins` files.
+* Prompt user how to change the dashboard's initial default password when emqx start.
+* Fix errno=13 'Permission denied' Cannot create FIFO boot error in Amazon Linux 2022 (el8 package)
+* Fix user or appid created, name only allow `^[A-Za-z]+[A-Za-z0-9-_]*$`
+* Fix subscribe http api crash by bad_qos `/mqtt/subscribe`,`/mqtt/subscribe_batch`.
+* Send DISCONNECT packet with reason code 0x98 if connection has been kicked [#7309]
 
 ## v4.4.1