There's a merged pull request on the void-packages repository

salt: remove contextvars dependency to fix 3003.3
https://github.com/void-linux/void-packages/pull/33331

Description:
The recent update to 3003.3 broke the `salt` package.  This PR intends to fix it.
A description of the issue is in the saltstack repo https://github.com/saltstack/salt/issues/60483

tldr: contextvars is included in recent versions of python.

This is the error I got when running `salt` after upgrading to 3003.3.
```
Traceback (most recent call last):
  File "/usr/bin/salt", line 33, in <module>
    sys.exit(load_entry_point('salt==3003.3', 'console_scripts', 'salt')())
  File "/usr/lib/python3.9/site-packages/salt/scripts.py", line 533, in salt_main
    import salt.cli.salt
  File "/usr/lib/python3.9/site-packages/salt/cli/salt.py", line 6, in <module>
    import salt.utils.job
  File "/usr/lib/python3.9/site-packages/salt/utils/job.py", line 12, in <module>
    import salt.minion
  File "/usr/lib/python3.9/site-packages/salt/minion.py", line 23, in <module>
    import salt.beacons
  File "/usr/lib/python3.9/site-packages/salt/beacons/__init__.py", line 9, in <module>
    import salt.loader
  File "/usr/lib/python3.9/site-packages/salt/loader.py", line 26, in <module>
    import salt.config
  File "/usr/lib/python3.9/site-packages/salt/config/__init__.py", line 16, in <module>
    import salt.syspaths
  File "/usr/lib/python3.9/site-packages/salt/syspaths.py", line 21, in <module>
    import salt.utils.platform
  File "/usr/lib/python3.9/site-packages/salt/utils/platform.py", line 10, in <module>
    from salt.utils.decorators import memoize as real_memoize
  File "/usr/lib/python3.9/site-packages/salt/utils/decorators/__init__.py", line 19, in <module>
    import salt.utils.args
  File "/usr/lib/python3.9/site-packages/salt/utils/args.py", line 15, in <module>
    import salt.utils.versions
  File "/usr/lib/python3.9/site-packages/salt/utils/versions.py", line 30, in <module>
    import salt.version
  File "/usr/lib/python3.9/site-packages/salt/version.py", line 9, in <module>
    import salt.utils.entrypoints
  File "/usr/lib/python3.9/site-packages/salt/utils/entrypoints.py", line 36, in <module>
    import pkg_resources
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 3243, in <module>
    def _initialize_master_working_set():
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 3226, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 3255, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 568, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 886, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 772, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'contextvars' distribution was not found and is required by salt
```


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