defmt-test: update dependency versions in docs
@@ -22,7 +22,7 @@ For a full list of defmt-test's capabilities, please refer to the documentation
# testsuite/Cargo.toml
[dependencies]
-+ defmt-test = "0.1.0"
++ defmt-test = "0.2.1"
```
2. Within the `testsuite/tests/test.rs` file, create a `tests` module and mark it with the `#[defmt_test::tests]` attribute. Within that module write `std`-like unit tests: functions marked with the `#[test]` attribute.
