fix: Update pyyaml to avoid build failures with cython 3

fix: Update pyyaml to avoid build failures with cython 3

pyyaml 5.4 fails to build with Cython >= 3.0.0a10 on both Ubuntu jammy and
Debian 12, causing this project's build to fail with the following
error:

```
  Traceback (most recent call last):
    File "/tmp/tmp.b5DvVvhyNr/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
      main()
    File "/tmp/tmp.b5DvVvhyNr/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 335, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/tmp/tmp.b5DvVvhyNr/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
      return hook(config_settings)
             ^^^^^^^^^^^^^^^^^^^^^
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 341, in get_requires_for_build_wheel
      return self._get_build_requires(config_settings, requirements=['wheel'])
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 323, in _get_build_requires
      self.run_setup()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 338, in run_setup
      exec(code, locals())
    File "<string>", line 271, in <module>
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/__init__.py", line 107, in setup
      return distutils.core.setup(**attrs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 185, in setup
      return run_commands(dist)
             ^^^^^^^^^^^^^^^^^^
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
      dist.run_commands()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 969, in run_commands
      self.run_command(cmd)
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/dist.py", line 1234, in run_command
      super().run_command(command)
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
      cmd_obj.run()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 314, in run
      self.find_sources()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 322, in find_sources
      mm.run()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 551, in run
      self.add_defaults()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 589, in add_defaults
      sdist.add_defaults(self)
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/command/sdist.py", line 104, in add_defaults
      super().add_defaults()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/command/sdist.py", line 251, in add_defaults
      self._add_defaults_ext()
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/command/sdist.py", line 336, in _add_defaults_ext
      self.filelist.extend(build_ext.get_source_files())
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "<string>", line 201, in get_source_files
    File "/tmp/tmp9j5cmxoa/.venv/lib/python3.11/site-packages/setuptools/_distutils/cmd.py", line 107, in __getattr__
      raise AttributeError(attr)
  AttributeError: cython_sources
```

The upstream issue is https://github.com/yaml/pyyaml/issues/601 and
there are two possible solutions:

* Update pyyaml
* Constrain the version of cython

Change-Id: I2c7b8f33bcbc5c3a0a60578e2d0dd74cdca4f2ba
Signed-off-by: Kienan Stewart <kstewart@efficios.com>