Update strum requirement from 0.26 to 0.27

Updates the requirements on [strum](https://github.com/Peternator7/strum) to permit the latest version.
- [Release notes](https://github.com/Peternator7/strum/releases)
- [Changelog](https://github.com/Peternator7/strum/blob/master/CHANGELOG.md)
- [Commits](Peternator7/strum@v0.26.1...v0.27.1)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -19,5 +19,5 @@ readme = "README.md"
 chrono = "0.4"
 thiserror = "1"
 strum_macros = "0.26"
-strum = { version = "0.26", features = ["derive"] }
+strum = { version = "0.27", features = ["derive"] }
 gnss-rs = { version = "2.3.1", features = ["serde"] }