add change-entry for x test stage update

Signed-off-by: onur-ozkan <[email protected]>

Author: onur-ozkan

src/bootstrap/src/utils/change_tracker.rs

@@ -355,4 +355,9 @@ pub const CONFIG_CHANGE_HISTORY: &[ChangeInfo] = &[
         severity: ChangeSeverity::Info,
         summary: "It is now possible to configure `jemalloc` for each target",
     },
+    ChangeInfo {
+        change_id: 137215,
+        severity: ChangeSeverity::Info,
+        summary: "Default stage for `x test` has been increased from 1 to 2.",
+    },
 ];