Update gir and regenerate with simplified trait bounds
Trait bounds moved from where T: Foo directly into the type parameter
definition at <T: Foo>: https://github.com/gtk-rs/gir/pull/1160.
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Trait bounds moved from where T: Foo directly into the type parameter
definition at <T: Foo>: https://github.com/gtk-rs/gir/pull/1160.