chore(deps): update rust crate tower to 0.4.13 (#193)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [tower](https://togithub.com/tower-rs/tower) | dev-dependencies |
patch | `0.4` -> `0.4.13` |

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Cargo.toml

@@ -23,5 +23,5 @@ tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
 urlencoding = "2.1.3"
 
 [dev-dependencies]
-tower = { version = "0.4", features = ["util"] }
+tower = { version = "0.4.13", features = ["util"] }
 serde_json = "1.0.116"