Update Rust crate thiserror to v1.0.69 (#1640)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [thiserror](https://redirect.github.com/dtolnay/thiserror) |
workspace.dependencies | patch | `1.0.66` -> `1.0.69` |

---

### Release Notes

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

###
[`v1.0.69`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.69)

[Compare
Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.68...1.0.69)

- Backport
[2.0.2](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.2)
fixes

###
[`v1.0.68`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.68)

[Compare
Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.67...1.0.68)

- Handle incomplete expressions more robustly in format arguments, such
as while code is being typed
([#&#8203;341](https://redirect.github.com/dtolnay/thiserror/issues/341),
[#&#8203;344](https://redirect.github.com/dtolnay/thiserror/issues/344))

###
[`v1.0.67`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.67)

[Compare
Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.66...1.0.67)

- Improve expression syntax support inside format arguments
([#&#8203;335](https://redirect.github.com/dtolnay/thiserror/issues/335),
[#&#8203;337](https://redirect.github.com/dtolnay/thiserror/issues/337),
[#&#8203;339](https://redirect.github.com/dtolnay/thiserror/issues/339),
[#&#8203;340](https://redirect.github.com/dtolnay/thiserror/issues/340))

</details>

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