Fix: Service tags appearing over search dropdown

[plafreniere]

Proposed change

Fixed a visual bug by modifying the z-index of the service widget. The search suggestions dropdown and the service widget have probably the same z-index (20) so the tags (docker status, ping, etc) (z-index of 21) appear over the dropdown.

Discussion # (https://github.com/gethomepage/homepage/discussions/3678)

Type of change

• [ ] New service widget
• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Documentation only
• [ ] Other (please explain)

Checklist:

• [ ] If applicable, I have added corresponding documentation changes.
• [ ] If applicable, I have reviewed the feature and / or service widget guidelines.
• [ ] I have checked that all code style checks pass using pre-commit hooks and linting checks.
• [x] If applicable, I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.

[shamoon]

This is not the correct way to make this change (it should be a a utility class) and I also cant reproduce it actually. Lets pickup the discussion for now.