Add ImageButton widget variant · pop-os/libcosmic@160a093

The following actions uses node12 which is deprecated and will be forced to run on node16: actions-rs/toolchain@v1, actions-rs/cargo@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

unused import: `::palette::RgbHue`

unused import: `iced_core::gradient::ColorStop`

unused import: `iced_core::gradient::Linear`

unused import: `iced_core::Degrees`

unused import: `iced_core::Radians`

unused import: `::palette::FromColor`

`iced_style` (lib) generated 6 warnings (run `cargo fix --lib -p iced_style` to apply 5 suggestions)

unreachable pattern

`iced_renderer` (lib) generated 1 warning

unused import: `iced_graphics::core::widget::operation::focusable::focus`

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

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