fix(deps): update rust crate serde to 1.0.199 (#14)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [serde](https://serde.rs)
([source](https://togithub.com/serde-rs/serde)) | dependencies | patch |
`1.0.198` -> `1.0.199` |

---

### Release Notes

<details>
<summary>serde-rs/serde</summary>

###
[`v1.0.199`](https://togithub.com/serde-rs/serde/releases/tag/v1.0.199)

[Compare
Source](https://togithub.com/serde-rs/serde/compare/v1.0.198...v1.0.199)

- Fix ambiguous associated item when `forward_to_deserialize_any!` is
used on an enum with `Error` variant
([#&#8203;2732](https://togithub.com/serde-rs/serde/issues/2732), thanks
[@&#8203;aatifsyed](https://togithub.com/aatifsyed))

</details>

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crates/octopush_core/Cargo.toml

@@ -19,6 +19,6 @@ git2 = { version = "0.18.3", features = [
   "vendored-libgit2",
   "vendored-openssl",
 ] }
-serde = { version = "1.0.198", features = ["derive"] }
+serde = { version = "1.0.199", features = ["derive"] }
 serde_yaml = "0.9.34+deprecated"
 octocrab = { version = "0.38.0", features = ["futures-core", "futures-util"] }