* Tests: Fix InputCompletion tests in Qt6
This is achieved by not checking exact order for certain completion tests
* Tests: Use Ubuntu 22.04 for all tests
This allows us to be a bit more loose and use more C++20 features in
tests
* Update dockerfiles
Use QTemporaryDir to create the test directory
Add option to use httpbin over local docker
Increase delay for opening a connection
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>
