Updates all dependencies other than ICU.
Enables the `dbus-config` libcosmic feature to fix theming responsiveness.
Also prevents the trash and network drive layer container from touching the edge of the window.
Fixes Clippy lints for:
* src/thumbnailer.rs
* src/operation/mod.rs
* src/operation/recursive.rs
One of the Clippy lints also involved fixing a TODO to replace a
deprecated function that malfunctioned under Windows.
