Bump serde from 1.0.138 to 1.0.139 in /src-tauri (#41)

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.138 to 1.0.139.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.138...v1.0.139)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src-tauri/Cargo.toml

@@ -16,7 +16,7 @@ tauri-build = { version = "1.0.2", features = [] }
 
 [dependencies]
 serde_json = "1.0.82"
-serde = { version = "1.0.138", features = ["derive"] }
+serde = { version = "1.0.139", features = ["derive"] }
 tauri = { version = "1.0.2", features = ["api-all", "devtools", "updater"] }
 
 [features]