chore(deps): update rust crate jiff to v0.1.19 (#1783)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [jiff](https://redirect.github.com/BurntSushi/jiff) |
workspace.dependencies | patch | `0.1.18` -> `0.1.19` |

---

### Release Notes

<details>
<summary>BurntSushi/jiff (jiff)</summary>

###
[`v0.1.19`](https://redirect.github.com/BurntSushi/jiff/blob/HEAD/CHANGELOG.md#0119-2025-01-02)

[Compare
Source](https://redirect.github.com/BurntSushi/jiff/compare/0.1.18...0.1.19)

\===================
This releases includes a UTF-8 related bug fix and a few enhancements.

Firstly, a `Span`'s default `Display` implementation now writes
uppercase
unit designator labels. That means you'll get `P1Y2M3DT4H5M6S` instead
of `P1y2m3dT4h5m6s` by default. You can restore previous behavior via
`jiff::fmt::temporal::SpanPrinter::lowercase`. This change was made to
improve
interoperability.

Secondly, `SignedDuration` now supports rounding via
`SignedDuration::round`.
Note that it only supports rounding time units (hours or smaller). In
order to
round with calendar units, you'll still need to use a `Span`.

Enhancements:

- [#&#8203;130](https://redirect.github.com/BurntSushi/jiff/issues/130):
Document value ranges for methods like `year`, `day`, `hour` and so on.
- [#&#8203;187](https://redirect.github.com/BurntSushi/jiff/issues/187):
    Add a rounding API (for time units only) on `SignedDuration`.
- [#&#8203;190](https://redirect.github.com/BurntSushi/jiff/issues/190):
`Span` and `SignedDuration` now use uppercase unit designator labels in
their
    default ISO 8601 `Display` implementation.

Bug fixes:

- [#&#8203;155](https://redirect.github.com/BurntSushi/jiff/issues/155):
    Relax `strftime` format strings from ASCII-only to all of UTF-8.

</details>

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