Update embedded-hal-bus requirement from 0.2.0 to 0.3.0

Updates the requirements on [embedded-hal-bus](https://github.com/rust-embedded/embedded-hal) to permit the latest version.
- [Release notes](https://github.com/rust-embedded/embedded-hal/releases)
- [Commits](rust-embedded/embedded-hal@embedded-hal-bus-v0.2.0...embedded-hal-bus-v0.3.0)

---
updated-dependencies:
- dependency-name: embedded-hal-bus
  dependency-type: direct:production
...

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

Author: dependabot[bot]

rtic-sync/Cargo.toml

@@ -24,7 +24,7 @@ rtic-common = { version = "1.0.0", path = "../rtic-common" }
 portable-atomic = { version = "1", default-features = false }
 embedded-hal = { version = "1.0.0" }
 embedded-hal-async = { version = "1.0.0" }
-embedded-hal-bus = { version = "0.2.0", features = ["async"] }
+embedded-hal-bus = { version = "0.3.0", features = ["async"] }
 defmt-03 = { package = "defmt", version = "0.3", optional = true }
 
 [dev-dependencies]