chore: bump tests/mender-image-tests from `0513c60` to `031783c`

Bumps [tests/mender-image-tests](https://github.com/mendersoftware/mender-image-tests) from `0513c60` to `031783c`.
- [Release notes](https://github.com/mendersoftware/mender-image-tests/releases)
- [Commits](0513c601b2...031783c3a8612863fd650715607c3ba2c7b4a8e6)

---
updated-dependencies:
- dependency-name: tests/mender-image-tests
  dependency-type: direct:production
...

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

tests/mender-image-tests

@@ -1 +1 @@
-Subproject commit 0513c601b27599f13692295c50e87ee28425b310
+Subproject commit 031783c3a8612863fd650715607c3ba2c7b4a8e6