Bump crash from 0.31.2 to 0.31.4 in /testing/native/python-unittest

Bumps [crash](https://github.com/crate/crash) from 0.31.2 to 0.31.4.
- [Release notes](https://github.com/crate/crash/releases)
- [Changelog](https://github.com/crate/crash/blob/master/CHANGES.txt)
- [Commits](crate/crash@0.31.2...0.31.4)

---
updated-dependencies:
- dependency-name: crash
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

testing/native/python-unittest/requirements.txt

@@ -1,3 +1,3 @@
 cr8==0.25.0
-crash==0.31.2
+crash==0.31.4
 setuptools  # Temporary, until next cr8 release.