Roll corpus tests again

Picks up https://pdfium-review.googlesource.com/c/pdfium_tests/+/138650

Bug: 42271957
Change-Id: Icbba8f7132611d4902dbb7f7189ebad763af5493
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/138651
Reviewed-by: Nico Weber <thakis@google.com>
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

DEPS

diff --git a/DEPS b/DEPS
index 8b25e35..f6776fd 100644
--- a/DEPS
+++ b/DEPS
@@ -190,7 +190,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling pdfium_tests
   # and whatever else without interference from each other.
-  'pdfium_tests_revision': '230bf55fb5c96c3946500a437b54e4400411262e',
+  'pdfium_tests_revision': '9cd54e6b4c6cfec64c64cef538ffd5734009864e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling result_adapter_revision
   # and whatever else without interference from each other.