chore(deps): update dependency viem to v2.46.0 (#209)

This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [viem](https://viem.sh)
([source](https://redirect.github.com/wevm/viem)) | dependencies | minor
| [`2.45.3` →
`2.46.0`](https://renovatebot.com/diffs/npm/viem/2.45.3/2.46.0) |
[![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/wevm/viem/badge)](https://securityscorecards.dev/viewer/?uri=github.com/wevm/viem)
|

---

### Release Notes

<details>
<summary>wevm/viem (viem)</summary>

###
[`v2.46.0`](https://redirect.github.com/wevm/viem/releases/tag/viem%402.46.0)

[Compare
Source](https://redirect.github.com/wevm/viem/compare/viem@2.45.3...viem@2.46.0)

##### Minor Changes

- [#&#8203;4304](https://redirect.github.com/wevm/viem/pull/4304)
[`b6b50d40fb6bbadc851377b74b2dd4da584958b0`](https://redirect.github.com/wevm/viem/commit/b6b50d40fb6bbadc851377b74b2dd4da584958b0)
Thanks [@&#8203;jxom](https://redirect.github.com/jxom)! - **Breaking
(`viem/tempo`):** Renamed `nonceKey: 'random'` to `nonceKey: 'expiring'`
to align with [TIP-1009](https://docs.tempo.xyz/protocol/tips/tip-1009)
terminology.

TIP-1009 defines "expiring nonces" as time-based replay protection using
`validBefore` timestamps. The name `'expiring'` better describes the
mechanism than `'random'`.

  ```diff
  await sendTransaction(client, {
    account,
  - nonceKey: 'random',
  + nonceKey: 'expiring',
    to: '0x...',
  })
  ```

</details>

---

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bun.lock

@@ -44,7 +44,7 @@
     "multiformats": "13.4.2",
     "lefthook": "2.1.1",
     "ox": "0.12.1",
-    "viem": "2.45.3",
+    "viem": "2.46.0",
     "yaml": "2.8.2",
     "zod": "4.3.6"
   }