Bump sx-api from e252f15 to 7c54af0 (#137)

Bumps [sx-api](https://github.com/snapshot-labs/sx-api) from `e252f15` to `7c54af0`.
- [Release notes](https://github.com/snapshot-labs/sx-api/releases)
- [Commits](snapshot-labs/sx-api@e252f15...7c54af0)

---
updated-dependencies:
- dependency-name: sx-api
  dependency-type: direct:production
...

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