ci: Include hidden files in artifact build

[mrbazzan]

Description

Fix CI failure

• I have opened this pull request against master
• I have added or modified the tests when changing logic
• I have followed the conventional commits guidelines to add meaningful information into the changelog
• I have read the contribution guidelines and I have joined #pr-review on
  Discord to find a “pr review buddy” who is going to review my pull request.

Summary by Sourcery

CI:

• Upload hidden coverage files as artifacts.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request modifies the CI workflow to include hidden files in the artifact build. This change ensures that all coverage data files are included in the artifact, which is necessary for the CI to pass.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
The CI workflow was modified to include hidden files in the artifact build.	Added the 'include-hidden-files: true' option to the 'actions/upload-artifact@v4' action.	.github/workflows/test.yml

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[sourcery-ai]

Hey @mrbazzan - I've reviewed your changes - here's some feedback:

Overall Comments:

• Please provide more context in the PR description about what CI failure this is fixing and why including hidden files resolves the issue. This will help future maintainers understand the reasoning behind this change.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[mrbazzan]

@fsbraun
Passes. Ready for review