Corrected Cancellation Source for KeepAlive Messages (#2129)

* Corrected Cancellation Source for KeepAlive Messages

* Use half of the keep alive value for the ping timeout

* Update release notes

* Update ReleaseNotes.md

* Update ReleaseNotes.md

* Update ReleaseNotes.md

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Co-authored-by: christian <[email protected]>

Remove package suffix for final release version

Improve CI

Fix Unit Tests

Restore behavior of _Server_ and _Port_ in client options (#2009)

* Restore old server and port behavior

* Fix unit test

Restore old signing to get out hotfix release (#2004)

[Client] Fix endpoint handling (#1999)

* Fix endpoint handling

* Fix different behavior for Mono framework.

* Restore old properties to avoid breaking changes

Fix support for unix sockets (#1995)

* Add support for changing the protocol type on socket level

* Do not set NoDelay when not supported by protocol

* Update release notes

* Fix release notes

1889 no service for type mqttnetservermqttserver has been registered (#…

…1892)

* Add missing service to service collection

* Update ReleaseNotes.md

* Restore service registrations

1846 server mqttserverstopasync doesnt indicate correct reason (#1872)