Update Chrome (for Testing) PIN

Chromium pin updated to 145.0.7631.0

Roll created at https://cr-buildbucket.appspot.com/build/8692824873201808257

Bug: none
Change-Id: I97cec2f82ece377571d1ae2c742a15485e566704
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7456108
Reviewed-by: Alex Rudenko <alexrudenko@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>

Author: devtools-ci-autoroll-builder

DEPS

@@ -49,7 +49,7 @@ vars = {
   # Chrome version used for tests. It should be regularly updated to
   # match the Canary version listed here:
   # https://googlechromelabs.github.io/chrome-for-testing/last-known-good-versions.json
-  'chrome': '145.0.7623.0',
+  'chrome': '145.0.7631.0',
 
   # 'magic' text to tell depot_tools that git submodules should be accepted but
   # but parity with DEPS file is expected.