Update Rust crate indoc to v2.0.6 (#26177)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [indoc](https://redirect.github.com/dtolnay/indoc) |
workspace.dependencies | patch | `2.0.5` -> `2.0.6` |

---

### Release Notes

<details>
<summary>dtolnay/indoc (indoc)</summary>

###
[`v2.0.6`](https://redirect.github.com/dtolnay/indoc/releases/tag/2.0.6)

[Compare
Source](https://redirect.github.com/dtolnay/indoc/compare/2.0.5...2.0.6)

-   Documentation improvements

</details>

---

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---

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---

Release Notes:

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Cargo.lock

@@ -6556,9 +6556,9 @@ dependencies = [
 
 [[package]]
 name = "indoc"
-version = "2.0.5"
+version = "2.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
+checksum = "f4c7245a08504955605670dbf141fceab975f15ca21570696aebe9d2e71576bd"
 
 [[package]]
 name = "infer"