Update siso_version to 8863265a67843154872be2be1fc0c37339691405

Change-Id: I0b0e015608015ac4534aaf46bf59c2b5a40f3d6c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/135512
Auto-Submit: Andy Phan <andyphan@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index a4d8447..bd21d39 100644
--- a/DEPS
+++ b/DEPS
@@ -212,7 +212,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling siso
   # and whatever else without interference from each other.
-  'siso_version': 'git_revision:15568691576f74b11a3c73c85a3c8dd5efb72f05',
+  'siso_version': 'git_revision:8863265a67843154872be2be1fc0c37339691405',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling skia
   # and whatever else without interference from each other.