add new change info

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

Author: onur-ozkan

src/bootstrap/src/utils/change_tracker.rs

@@ -111,4 +111,9 @@ pub const CONFIG_CHANGE_HISTORY: &[ChangeInfo] = &[
         severity: ChangeSeverity::Warning,
         summary: "A new `optimized-compiler-builtins` option has been introduced. Whether to build llvm's `compiler-rt` from source is no longer implicitly controlled by git state. See the PR for more details.",
     },
+    ChangeInfo {
+        change_id: 119899,
+        severity: ChangeSeverity::Info,
+        summary: "Stage 0 std is now same as beta std rather than the compiled version from source (which is now stage 1). If you want to test/build std on stage 0, use `--build-std-on-stage0` flag (e.g., `x test --stage0 --build-std-on-stage0 alloc`).",
+    },
 ];