update convimg submodule

ZERICO2005 · ZERICO2005 · commit 75397c88c4cf · 2025-10-31T14:52:31.000-06:00
diff --git a/tools/convimg b/tools/convimg
@@ -1 +1 @@
-Subproject commit d26249547fa11f4866bf222a956baa8621210d23
+Subproject commit 6e9d32760be4b4b8acac586d39d391f38f76d1e9
