chore(deps): update dependency handy_window to ^0.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
handy_window	dependencies	minor	^0.2.0 -> ^0.4.0

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[!WARNING] Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

ubuntu-flutter-community/handy_window (handy_window)

### [`v0.4.0`](https://togithub.com/ubuntu-flutter-community/handy_window/blob/HEAD/CHANGELOG.md#040-2024-03-09) [Compare Source](https://togithub.com/ubuntu-flutter-community/handy_window/compare/v0.3.1...v0.4.0) ### [`v0.3.1`](https://togithub.com/ubuntu-flutter-community/handy_window/blob/HEAD/CHANGELOG.md#031) [Compare Source](https://togithub.com/ubuntu-flutter-community/handy_window/compare/v0.3.0...v0.3.1) - Fix Adwaita white line on top when maximized by [@​Jupi007](https://togithub.com/Jupi007) in [https://github.com/ubuntu-flutter-community/handy_window/pull/32](https://togithub.com/ubuntu-flutter-community/handy_window/pull/32) ### [`v0.3.0`](https://togithub.com/ubuntu-flutter-community/handy_window/blob/HEAD/CHANGELOG.md#030) [Compare Source](https://togithub.com/ubuntu-flutter-community/handy_window/compare/v0.2.1...v0.3.0) - Update dependency yaru to ^0.5.0 by [@​renovate](https://togithub.com/renovate) in [https://github.com/ubuntu-flutter-community/handy_window/pull/25](https://togithub.com/ubuntu-flutter-community/handy_window/pull/25) - Add option to use libhandy without widget tree manipulation by [@​jpnurmi](https://togithub.com/jpnurmi) in [https://github.com/ubuntu-flutter-community/handy_window/pull/28](https://togithub.com/ubuntu-flutter-community/handy_window/pull/28) - Revert shadow to Gtk3 one by [@​Jupi007](https://togithub.com/Jupi007) in [https://github.com/ubuntu-flutter-community/handy_window/pull/29](https://togithub.com/ubuntu-flutter-community/handy_window/pull/29)

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