chore: bump newsdiff submodule to version-race fix (6acbc11)

rmdes · rmdes · commit c828bef416d5 · 2026-06-07T12:53:42.000+02:00
diff --git a/newsdiff b/newsdiff
@@ -1 +1 @@
-Subproject commit 8822fdb8ee5b661d42faa85acdbb2806604c51dd
+Subproject commit 6acbc113867a76d82edd684ffba3dabba4319c9f
