build(deps): bump @middy/core from 2.5.3 to 2.5.4 (#400)

Bumps [@middy/core](https://github.com/middyjs/middy/tree/HEAD/packages/core) from 2.5.3 to 2.5.4.
- [Release notes](https://github.com/middyjs/middy/releases)
- [Changelog](https://github.com/middyjs/middy/blob/main/docs/CHANGELOG.md)
- [Commits](https://github.com/middyjs/middy/commits/2.5.4/packages/core)

---
updated-dependencies:
- dependency-name: "@middy/core"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]