Changes in libsoup from 3.4.2 to 3.4.3:

* Fix incorrect UTF-8 encoding for params in headers [Leo Zi-You Assini]
* Numerous HTTP/2 fixes and improvements [Carlos Garcia Campos]
* Fix possible crashes in connection management [Michael Catanzaro]
* Fix small leak in SoupServer [Emil Ljungdahl]
* Fix the possibility of empty HTTP/2 frames being sent [Pawel Lampe]