fix(deps): update dependency @netlify/serverless-functions-api to v1.28.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@netlify/serverless-functions-api	1.28.0 -> 1.28.1

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Release Notes

netlify/serverless-functions-api (@​netlify/serverless-functions-api)

### [`v1.28.1`](https://redirect.github.com/netlify/serverless-functions-api/compare/4044c1d1b6033d1c31debd427313bbd4b9752f73...ce42134ef5fba485a3203d9b2bf883e9904f02ea) [Compare Source](https://redirect.github.com/netlify/serverless-functions-api/compare/4044c1d1b6033d1c31debd427313bbd4b9752f73...ce42134ef5fba485a3203d9b2bf883e9904f02ea)

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Configuration

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