DEPS: update chrome beta to 131.0.6778.13

Change-Id: I24ad040200f91ec1b2c5f193bdb25bd84a950a13
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/391304
Reviewed-by: Nate Biggs <[email protected]>
Commit-Queue: Sigmund Cherem <[email protected]>

Author: sigmundch

DEPS

@@ -205,7 +205,7 @@ vars = {
   # meant to be downloaded by users for local testing. You can self-service
   # update these by following the go/dart-engprod/browsers.md instructions.
   "download_chrome": False,
-  "chrome_tag": "131.0.6778.3",
+  "chrome_tag": "131.0.6778.13",
   "download_firefox": False,
   "firefox_tag": "131.0.3",