build(deps): bump fern in /src-tauri in the backend-deps group

Bumps the backend-deps group in /src-tauri with 1 update: [fern](https://github.com/daboross/fern).


Updates `fern` from 0.6.2 to 0.7.0
- [Release notes](https://github.com/daboross/fern/releases)
- [Changelog](https://github.com/daboross/fern/blob/main/CHANGELOG.md)
- [Commits](daboross/fern@fern-0.6.2...fern-0.7.0)

---
updated-dependencies:
- dependency-name: fern
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: backend-deps
...

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

src-tauri/Cargo.toml

@@ -20,7 +20,7 @@ chrono = "0.4.38"
 dir-diff = "0.3.3"
 directories = "5.0.1"
 rustc-serialize = "0.3"
-fern = { version = "0.6.1", features = ["date-based", "colored"] }
+fern = { version = "0.7.0", features = ["date-based", "colored"] }
 flate2 = "1.0.34"
 fs_extra = "1.3.0"
 futures-util = "0.3.31"