Bump uniffi from 0.27.3 to 0.29.0

Bumps [uniffi](https://github.com/mozilla/uniffi-rs) from 0.27.3 to 0.29.0.
- [Changelog](https://github.com/mozilla/uniffi-rs/blob/main/CHANGELOG.md)
- [Commits](mozilla/uniffi-rs@v0.27.3...v0.29.0)

---
updated-dependencies:
- dependency-name: uniffi
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -31,7 +31,7 @@ feather-ui.workspace = true
 ultraviolet.workspace = true
 im.workspace = true
 glyphon.workspace = true
-uniffi = "0.27.0"
+uniffi = "0.29.0"
 
 [build-dependencies]
-uniffi = { version = "0.27.0", features = ["build"] }
+uniffi = { version = "0.29.0", features = ["build"] }