build(deps): bump the backend-deps group in /src-tauri with 4 updates

Bumps the backend-deps group in /src-tauri with 4 updates: [futures-util](https://github.com/rust-lang/futures-rs), [serde](https://github.com/serde-rs/serde), [serde_json](https://github.com/serde-rs/json) and [wgpu](https://github.com/gfx-rs/wgpu).


Updates `futures-util` from 0.3.28 to 0.3.29
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/futures-rs@0.3.28...0.3.29)

Updates `serde` from 1.0.189 to 1.0.190
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.189...v1.0.190)

Updates `serde_json` from 1.0.107 to 1.0.108
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.107...v1.0.108)

Updates `wgpu` from 0.17.1 to 0.18.0
- [Release notes](https://github.com/gfx-rs/wgpu/releases)
- [Changelog](https://github.com/gfx-rs/wgpu/blob/trunk/CHANGELOG.md)
- [Commits](gfx-rs/wgpu@v0.17.1...v0.18.0)

---
updated-dependencies:
- dependency-name: futures-util
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: backend-deps
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: backend-deps
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: backend-deps
- dependency-name: wgpu
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: backend-deps
...

Signed-off-by: dependabot[bot] <[email protected]>