Update Rust crate serde_json to v1.0.139 (#68)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [serde_json](https://github.com/serde-rs/json) | dependencies | patch | `1.0.138` -> `1.0.139` |

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### Release Notes

<details>
<summary>serde-rs/json (serde_json)</summary>

### [`v1.0.139`](https://github.com/serde-rs/json/releases/tag/v1.0.139)

[Compare Source](https://github.com/serde-rs/json/compare/v1.0.138...v1.0.139)

-   Documentation improvements

</details>

---

### Configuration

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🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

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Reviewed-on: #68
Co-authored-by: Pierre HUBERT <pierre@noreply.localhost>
Co-committed-by: Pierre HUBERT <pierre@noreply.localhost>

Cargo.lock

@@ -1387,9 +1387,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.138"
+version = "1.0.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d434192e7da787e94a6ea7e9670b26a036d0ca41e0b7efb2676dd32bae872949"
+checksum = "44f86c3acccc9c65b153fe1b85a3be07fe5515274ec9f0653b4a0875731c72a6"
 dependencies = [
  "itoa",
  "memchr",