Update Rust crate sqlformat to v0.2.6 (#18676)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [sqlformat](https://redirect.github.com/shssoichiro/sqlformat-rs) |
dependencies | patch | `0.2.4` -> `0.2.6` |

---

### Release Notes

<details>
<summary>shssoichiro/sqlformat-rs (sqlformat)</summary>

###
[`v0.2.6`](https://redirect.github.com/shssoichiro/sqlformat-rs/blob/HEAD/CHANGELOG.md#Version-026)

[Compare
Source](https://redirect.github.com/shssoichiro/sqlformat-rs/compare/v0.2.5...v0.2.6)

- fix: ON UPDATE with two many blank formatted incorrectly
([#&#8203;46](https://redirect.github.com/shssoichiro/sqlformat-rs/issues/46))
-   fix: `EXCEPT` not handled well
- fix: REFERENCES xyz ON UPDATE .. causes formatter to treat the
remaining as an UPDATE statement
-   fix: Escaped strings formatted incorrectly
-   fix: RETURNING is not placed on a new line
- fix: fix the issue of misaligned comments after formatting
([#&#8203;40](https://redirect.github.com/shssoichiro/sqlformat-rs/issues/40))

###
[`v0.2.5`](https://redirect.github.com/shssoichiro/sqlformat-rs/compare/v0.2.4...v0.2.5)

[Compare
Source](https://redirect.github.com/shssoichiro/sqlformat-rs/compare/v0.2.4...v0.2.5)

</details>

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Release Notes:

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