chore(deps) Update Rust crate tokio to 1.3 (#1343)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

tauri/Cargo.toml

@@ -22,7 +22,7 @@ serde_json = "1.0"
 serde = { version = "1.0", features = [ "derive" ] }
 base64 = "0.13.0"
 lazy_static = "1.4.0"
-tokio = { version = "1.2", features = ["rt", "rt-multi-thread", "sync"] }
+tokio = { version = "1.3", features = ["rt", "rt-multi-thread", "sync"] }
 futures = "0.3"
 async-trait = "0.1"
 uuid = { version = "0.8.2", features = [ "v4" ] }