Log Message:
net/unifi: Update to 5.11.50

Updating note: This is major update from 5.10.x, and for me, it wanted
to restore from an internal backup.  So as is always good advice, back
up everything before you start in case.  And for this, if you can do
an in-app backup just before, that may reduce lossage of historical
data.

Release Notes for 5.11.46 (upstream does not reliably publish findable
release notes).

    Java 8 must be installed on the system hosting the controller
    software. Java 9 and later are not yet supported.

    Minimum supported device firmware for UAP/USW is 4.0.9, and for
    USG it’s 4.4.34 – multi-tenanted instances will be force-upgraded
    (for the greater good), single-tenanted instances can opt to defer
    the controller upgrade for up to 90 days.

    If you have any ‘service dns forwarding options’ configuration
    defined in config.gateway.json, it will overwrite the provisioning
    of statically defined name servers, leaving you with no
    DNS. Either remove the ‘service dns forwarding options’ portion of
    config.gateway.json, or add additional ‘options’ lines defining
    name servers, such as ‘server=1.1.1.1’, ‘server=8.8.8.8’, etc.

    PoE passthrough control was implemented for UAP-IW-HD which means
    that the default for PoE passthrough is now disabled instead of
    enabled. If you were using this feature before then you will need
    to re-enable it via the device property panel.

    (Many bugfixes.)