chore(deps): update hardhat packages (#178)

This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [@nomicfoundation/hardhat-ignition-viem](https://hardhat.org)
([source](https://redirect.github.com/NomicFoundation/hardhat/tree/HEAD/v-next/hardhat-ignition-viem))
| dependencies | patch | [`0.15.14` ->
`0.15.15`](https://renovatebot.com/diffs/npm/@nomicfoundation%2fhardhat-ignition-viem/0.15.14/0.15.15)
| [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/NomicFoundation/hardhat/badge)](https://securityscorecards.dev/viewer/?uri=github.com/NomicFoundation/hardhat)
|
|
[hardhat](https://redirect.github.com/nomicfoundation/hardhat/tree/v-next/v-next/hardhat)
([source](https://redirect.github.com/NomicFoundation/hardhat/tree/HEAD/v-next/hardhat))
| dependencies | patch | [`2.26.4` ->
`2.26.5`](https://renovatebot.com/diffs/npm/hardhat/2.26.4/2.26.5) |
[![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/NomicFoundation/hardhat/badge)](https://securityscorecards.dev/viewer/?uri=github.com/NomicFoundation/hardhat)
|

---

### Release Notes

<details>
<summary>NomicFoundation/hardhat
(@&#8203;nomicfoundation/hardhat-ignition-viem)</summary>

###
[`v0.15.15`](https://redirect.github.com/NomicFoundation/hardhat/compare/@nomicfoundation/hardhat-ignition-viem@0.15.14...@nomicfoundation/hardhat-ignition-viem@0.15.15)

[Compare
Source](https://redirect.github.com/NomicFoundation/hardhat/compare/@nomicfoundation/hardhat-ignition-viem@0.15.14...@nomicfoundation/hardhat-ignition-viem@0.15.15)

</details>

<details>
<summary>NomicFoundation/hardhat (hardhat)</summary>

###
[`v2.26.5`](https://redirect.github.com/NomicFoundation/hardhat/releases/tag/hardhat%402.26.5):
Hardhat v2.26.5

[Compare
Source](https://redirect.github.com/NomicFoundation/hardhat/compare/hardhat@2.26.4...hardhat@2.26.5)

This release is a small bug fix to improve compilation in the presence
of a malformed `solidity-files-cache`.

##### Changes

-
[`f886268`](https://redirect.github.com/NomicFoundation/hardhat/commit/f886268):
Ignore malformed solidity-files-cache so compilation keeps running while
logging the issue in debug, thanks
[@&#8203;iosh](https://redirect.github.com/iosh)
([#&#8203;6489](https://redirect.github.com/NomicFoundation/hardhat/issues/6489))

***

> 💡 **The Nomic Foundation is hiring! Check [our open
positions](https://www.nomic.foundation/jobs).**

***

</details>

---

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---

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---

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<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Update Hardhat to 2.26.5 and @nomicfoundation/hardhat-ignition-viem to
0.15.15 to pick up minor bug fixes and improve compile stability. No
code changes, only dependency bumps.

- **Dependencies**
- hardhat: 2.26.4 → 2.26.5 (ignores malformed solidity-files-cache to
keep compilation running)
  - @nomicfoundation/hardhat-ignition-viem: 0.15.14 → 0.15.15

<sup>Written for commit 50d78be. Summary will update automatically on
new commits.</sup>

<!-- End of auto-generated description by cubic. -->

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

Author: renovate[bot]

bun.lock

@@ -38,13 +38,13 @@
     "@graphprotocol/graph-cli": "0.96.0",
     "@graphprotocol/graph-ts": "0.38.0",
     "@nomicfoundation/hardhat-foundry": "1.2.0",
-    "@nomicfoundation/hardhat-ignition-viem": "0.15.14",
+    "@nomicfoundation/hardhat-ignition-viem": "0.15.15",
     "@nomicfoundation/hardhat-toolbox-viem": "4.1.1",
     "@nomiclabs/hardhat-solhint": "4.1.0",
     "@openzeppelin/contracts": "5.4.0",
     "@openzeppelin/subgraphs": "0.1.8-5",
     "@openzeppelin/contracts-upgradeable": "5.4.0",
-    "hardhat": "2.26.4",
+    "hardhat": "2.26.5",
     "solhint": "6.0.1",
     "erc721a": "4.3.0"
   },