Update Rust crate serde_repr to v0.1.20 (#27146)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [serde_repr](https://redirect.github.com/dtolnay/serde-repr) |
workspace.dependencies | patch | `0.1.19` -> `0.1.20` |

---

### Release Notes

<details>
<summary>dtolnay/serde-repr (serde_repr)</summary>

###
[`v0.1.20`](https://redirect.github.com/dtolnay/serde-repr/releases/tag/0.1.20)

[Compare
Source](https://redirect.github.com/dtolnay/serde-repr/compare/0.1.19...0.1.20)

-   Documentation improvements

</details>

---

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---

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---

Release Notes:

- N/A

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Cargo.lock

@@ -12578,9 +12578,9 @@ dependencies = [
 
 [[package]]
 name = "serde_repr"
-version = "0.1.19"
+version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c64451ba24fc7a6a2d60fc75dd9c83c90903b19028d4eff35e88fc1e86564e9"
+checksum = "175ee3e80ae9982737ca543e96133087cbd9a485eecc3bc4de9c1a37b47ea59c"
 dependencies = [
  "proc-macro2",
  "quote",