fix(deps): update dependency @netlify/serverless-functions-api to v1.16.0 (#485)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[@netlify/serverless-functions-api](https://togithub.com/netlify/serverless-functions-api)
| [`1.15.0` ->
`1.16.0`](https://renovatebot.com/diffs/npm/@netlify%2fserverless-functions-api/1.15.0/1.16.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@netlify%2fserverless-functions-api/1.16.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@netlify%2fserverless-functions-api/1.16.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|
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|

---

### Release Notes

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

###
[`v1.16.0`](https://togithub.com/netlify/serverless-functions-api/compare/97a4d4876c50973a6906a1438c29eda9c8a0a378...cc37adbf78397bff241fd06d76905f873f3e6c2a)

[Compare
Source](https://togithub.com/netlify/serverless-functions-api/compare/97a4d4876c50973a6906a1438c29eda9c8a0a378...cc37adbf78397bff241fd06d76905f873f3e6c2a)

</details>

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package-lock.json

@@ -62,7 +62,7 @@
     "test": "test"
   },
   "dependencies": {
-    "@netlify/serverless-functions-api": "1.15.0"
+    "@netlify/serverless-functions-api": "1.16.0"
   },
   "devDependencies": {
     "@arethetypeswrong/cli": "^0.15.0",