Loosen platformdirs dependency

[stefanor]

4.x is backwards compatible with 3.x except that site_cache_dir has moved to /var/cache. Vorta doesn't use this.

https://github.com/platformdirs/platformdirs/releases/tag/4.0.0

Related Issue

N/A

Motivation and Context

Debian is applying this patch so it can carry platformdirs 4.

How Has This Been Tested?

Ran the test suite as part of a Debian build.

Screenshots (if appropriate):

N/A

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have read the CONTRIBUTING guide.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

I provide my contribution under the terms of the license of this repository and I affirm the Developer Certificate of Origin.

[Hofer-Julian]

Seems like this change broke the macOS CI.
Maybe we adapt only the linux version range?

[m3nu]

macos tests are currently timing out. It's not related to this PR. I still need to look into it.

[Hofer-Julian]

@m3nu do you plan to override the "required statuses must pass before merging" then?

[m3nu]

god mode 🙌

[m3nu]

Took some screenshots for macOS CI tests. The tests run simply extremely slow and can't even get close to finishing in 20min. Hence the timeout.

Let's hope this is a temporary Github issue.

I've removed those tests from merge checks for now.