Update convimg dependency

myclevorname · mateoconlechuga · commit ece00f47e75a · 2024-09-07T10:31:31.000-06:00
This had the same problem as #498, so I sent a PR to convimg to remove fasmg-ez80, which somehow still existed in `.gitmodules`. Now, the submodule needs updated.
diff --git a/tools/convimg b/tools/convimg
@@ -1 +1 @@
-Subproject commit 5a9b5e782a23dac97dca06a9e4930746979102a2
+Subproject commit c85ba81631dcd61002c7164d3df5134c51a760d2
