chore(deps): update nb requirement from 0.1.1 to 1.0.0 (#2)

Updates the requirements on [nb](https://github.com/rust-embedded/nb) to permit the latest version.
- [Release notes](https://github.com/rust-embedded/nb/releases)
- [Changelog](https://github.com/rust-embedded/nb/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-embedded/nb/compare/v0.1.1...v1.0.0

)

---
updated-dependencies:
- dependency-name: nb
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -12,7 +12,7 @@ panic-halt = "0.2.0"
 panic-semihosting = "0.5.0"
 cortex-m-semihosting = "0.3.5"
 stm32l4xx-hal = { version = "0.6.0", features = ["rt", "stm32l4x2"] }
-nb = "0.1.1"
+nb = "1.0.0"
 
 [[bin]]
 name = "stm"