fix(deps): update dependency @netlify/serverless-functions-api to v1.…

…18.5 (#511)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[@netlify/serverless-functions-api](https://github.com/netlify/serverless-functions-api)
| [`1.18.4` ->
`1.18.5`](https://renovatebot.com/diffs/npm/@netlify%2fserverless-functions-api/1.18.4/1.18.5)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@netlify%2fserverless-functions-api/1.18.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@netlify%2fserverless-functions-api/1.18.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@netlify%2fserverless-functions-api/1.18.4/1.18.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@netlify%2fserverless-functions-api/1.18.4/1.18.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>netlify/serverless-functions-api
(@&#8203;netlify/serverless-functions-api)</summary>

###
[`v1.18.5`](https://github.com/netlify/serverless-functions-api/compare/901c1d671f1a8a7daeb0d42fcda1695f1bf64f1d...a28cbf42b3d48de7bc9617b9145f99cfdf2deeed)

[Compare
Source](https://github.com/netlify/serverless-functions-api/compare/901c1d671f1a8a7daeb0d42fcda1695f1bf64f1d...a28cbf42b3d48de7bc9617b9145f99cfdf2deeed)

</details>

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