Fix check dirty in Prepare dependencies CI

[epenet]

Proposed change

Missed in https://github.com/home-assistant/core/pull/132173 Noticed in https://github.com/home-assistant/core/pull/132176

https://github.com/home-assistant/core/actions/runs/12141729868/job/33855008847?pr=132176

***** ERROR
Tests are leaving files behind. Please update the tests to avoid writing any files:
requirements_all_pytest.txt
requirements_all_wheels_aarch64.txt
requirements_all_wheels_amd64.txt
requirements_all_wheels_armhf.txt
requirements_all_wheels_armv7.txt
requirements_all_wheels_i386.txt

Confirmed to be working in https://github.com/home-assistant/core/actions/runs/12142845627/job/33858319521?pr=132179

Type of change

• [ ] Dependency upgrade
• [x] Bugfix (non-breaking change which fixes an issue)
• [ ] New integration (thank you!)
• [ ] New feature (which adds functionality to an existing integration)
• [ ] Deprecation (breaking change to happen in the future)
• [ ] Breaking change (fix/feature causing existing functionality to break)
• [ ] Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• [ ] The code change is tested and works locally.
• [ ] Local tests pass. Your PR cannot be merged unless tests pass
• [ ] There is no commented out code in this PR.
• [ ] I have followed the development checklist
• [ ] I have followed the perfect PR recommendations
• [ ] The code has been formatted using Ruff (ruff format homeassistant tests)
• [ ] Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• [ ] Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• [ ] The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• [ ] New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• [ ] For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

To help with the load of incoming pull requests:

• [ ] I have reviewed two other open pull requests in this repository.