v4.4.12

Enhancements

Added Amazon Linxu 2 (amzn2) package release #9498.
Upgrade http client library ehttpc from 0.2.1 to 0.4.2 #9456.
Add more PSK ciphers support #9493.
Users can define the externalTrafficPolicy of service in EMQX Helm Chart #9527.

Fixed load bootstrap file when no bootstrap user in mqtt_app #9474.
Trigger message.dropped hook when QoS2 message is resend by client with a same packet id, or 'awaiting_rel' queue is full #9486.
When dashboard creates a new user, the password length must match 3-32 and the format is ^[A-Za-z0-9]+[A-Za-z0-9-_]*$ #9475.
Fixed EMQX Helm Chart using incorrect secret values when custom credentials are provided #9508.
Fixed EMQX Helm Chart can not set JSON type value for EMQX Broker configuration items #9504.
When resource creation is too slow, there may be some temporary probing connections left #9539.