chore(deps): update rust crate softbuffer to v0.4.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
softbuffer	dependencies	patch	0.4.6 → 0.4.8

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Release Notes

rust-windowing/softbuffer (softbuffer)

v0.4.8

Compare Source

• Fix documentation building on docs.rs.

v0.4.7

Compare Source

• Added support for Android using the ndk crate.
• Added support for wasm64-* targets.
• Improved examples.
• Added Buffer::width() and Buffer::height() getters.
• Context now implements Clone.
• Context, Surface and Buffer now implement Debug.
• Bump MSRV to Rust 1.71.
• Replace log with tracing.
• Remove cfg_aliases dependency.
• Update to objc2 0.6, objc2-* 0.3, drm 0.14, rustix 1.0 and windows-sys 0.61.

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