Update yapf version 0.22 -> 0.24

0.24 has just been uploaded see bug.

Bug: 890349
Change-Id: Ice1e0c54d3fb60c0da5fde14aafae20c3ac449ce
Reviewed-on: https://chromium-review.googlesource.com/c/1261756
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Aiden Benner <abenner@google.com>
diff --git a/yapf b/yapf
index a1e5b1a..c93ed2f 100755
--- a/yapf
+++ b/yapf
@@ -3,7 +3,7 @@
 # [VPYTHON:BEGIN]
 # wheel: <
 #   name: "infra/python/wheels/yapf-py2_py3"
-#   version: "version:0.22.0"
+#   version: "version:0.24.0"
 # >
 # [VPYTHON:END]