build(deps): bump embedded-storage from 0.3.0 to 0.3.1

Bumps [embedded-storage](https://github.com/rust-embedded-community/embedded-storage) from 0.3.0 to 0.3.1.
- [Release notes](https://github.com/rust-embedded-community/embedded-storage/releases)
- [Changelog](https://github.com/rust-embedded-community/embedded-storage/blob/master/CHANGELOG.md)
- [Commits](rust-embedded-community/embedded-storage@embedded-storage-async-v0.3.0...v0.3.1)

---
updated-dependencies:
- dependency-name: embedded-storage
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>