Unable to install `recpack` dependencies due to old PyYAML version

recpack versions affected

all

Description

Due to the recent cython 3.0.0 release older pyyaml versions cannot be installed anymore and with this the recpack installation fails as well. The newest version 6.0.1 contains a workaround for this issue, but due to the version constrains specified in this project it is not pulled in.

Proposed Solution

From a quick check in the pyyaml change-log and in the recpack source code it doesn't look as if this code is affected by any of the breaking changes mentioned. So it should be possible to "just" update the version constrains in the setup.py to solve this issue.

P.S.: I'm happy to open the associated MR myself.