chore(deps): update test-harness digest to 89c9af6 (#432)

renovate[bot] · web-flow · commit 6879af34832e · 2025-09-04T08:20:01.000+02:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/test-harness b/test-harness
@@ -1 +1 @@
-Subproject commit cc576c1764eea0828cc8667fb7bde803df94aef7
+Subproject commit 89c9af69a7f5feecddbb6d5bcbabbc295604bb1b
