updates m4/ submodule version

danielpeter · danielpeter · commit 2c8947bfa4d4 · 2024-11-20T18:24:07.000+01:00
diff --git a/m4 b/m4
@@ -1 +1 @@
-Subproject commit e490e14fb13595428d39055304bcf0ee7ab94806
+Subproject commit f5b39ccf9ebf30a919f1a36ea05a3b53e84cd899
