chore(ci): Advance velox (#26456)

amitkdutta · web-flow · commit a6519554a89b · 2025-10-29T08:54:13.000-07:00
```
== NO RELEASE NOTE ==
```
diff --git a/presto-native-execution/velox b/presto-native-execution/velox
@@ -1 +1 @@
-Subproject commit 63b3904aaa48c9000bb66b956f2c155351c74692
+Subproject commit 6c9d9ccad56fb952a0c1d3fbe01243b4c114b632
