gitlab-ci: Enable unit test report for arm64_a630_traces

Inform gitlab about the JUnit XML file that tracie produces, so that the
pipeline page can present more detailed information about tracie test
results.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6598>
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 57fb5bb..bd92df9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1152,6 +1152,9 @@
     # missing.
     MESA_GLSL_VERSION_OVERRIDE: "460"
     MESA_GL_VERSION_OVERRIDE: "4.6"
+  artifacts:
+    reports:
+      junit: results/junit.xml
 
 # Along with checking gmem path, check that we don't get obvious nir
 # validation failures (though it's too expensive to have it on for the