bump submodule to June 26 nightly

evertlammerts · evertlammerts · commit 4c63e39edb01 · 2026-06-26T09:00:57.000+02:00
diff --git a/external/duckdb b/external/duckdb
@@ -1 +1 @@
-Subproject commit 0361de441a122f11fe07c40ce4531cd58f5eaf7a
+Subproject commit 06eb6b6858c6d568f5fe62855f53c386f13c98c7
