chore(deps): update rust crate syn to v2.0.63 (#465)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [syn](https://togithub.com/dtolnay/syn) | workspace.dependencies |
patch | `2.0.61` -> `2.0.63` |

---

### Release Notes

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

### [`v2.0.63`](https://togithub.com/dtolnay/syn/releases/tag/2.0.63)

[Compare
Source](https://togithub.com/dtolnay/syn/compare/2.0.62...2.0.63)

- Parse and print long if-else-if chains without reliance on deep
recursion to avoid overflowing stack
([#&#8203;1644](https://togithub.com/dtolnay/syn/issues/1644),
[#&#8203;1645](https://togithub.com/dtolnay/syn/issues/1645))

### [`v2.0.62`](https://togithub.com/dtolnay/syn/releases/tag/2.0.62)

[Compare
Source](https://togithub.com/dtolnay/syn/compare/2.0.61...2.0.62)

- Reject invalid unparenthesized range and comparison operator
expressions
([#&#8203;1642](https://togithub.com/dtolnay/syn/issues/1642),
[#&#8203;1643](https://togithub.com/dtolnay/syn/issues/1643))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/matter-labs/zksync-withdrawal-finalizer).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zNTEuMiIsInVwZGF0ZWRJblZlciI6IjM3LjM1MS4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>