build(core-api): bump tokio from 1.34.0 to 1.39.1

Bumps the cargo group with 1 update in the /packages/cactus-core-api
directory: [tokio](https://github.com/tokio-rs/tokio).

Updates `tokio` from 1.34.0 to 1.39.1
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.34.0...tokio-1.39.1)

---
updated-dependencies:
- dependency-name: tokio
  dependency-type: direct:production
  dependency-group: cargo
...

Co-authored-by: Peter Somogyvari <peter.somogyvari@accenture.com>

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

packages/cactus-core-api/Cargo.toml

@@ -12,7 +12,7 @@ path = "src/main/rust/pb.rs"
 [dependencies]
 tonic = {version="0.10.2", features = ["tls"]}
 prost = "0.12.3"
-tokio = { version = "1.34.0", features = ["macros", "fs"] }
+tokio = { version = "1.39.1", features = ["macros", "fs"] }
 serde = {version="1.0.193", features = ["derive"]}
 
 [build-dependencies]