Build(deps): Update crate requirement in /testing/native/python-unittest

Updates the requirements on [crate](https://github.com/crate/crate) to permit the latest version.
- [Release notes](https://github.com/crate/crate/releases)
- [Commits](https://github.com/crate/crate/commits)

---
updated-dependencies:
- dependency-name: crate
  dependency-version: 2.2.1b1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

testing/native/python-unittest/requirements.txt

@@ -1,3 +1,3 @@
 cr8>=0.27.2
 crash>=0.32.0
-crate>=2.0.0.dev6
+crate>=2.2.1b1