Update chrome_tag to 132.0.6834.6

This is the latest beta per https://googlechromelabs.github.io/chrome-for-testing/.

Change-Id: I578f199f1f5f0793ec6da39e26915707ca73d7a9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/395582
Reviewed-by: Nicholas Shahan <[email protected]>
Commit-Queue: Nicholas Shahan <[email protected]>
Auto-Submit: Srujan Gaddam <[email protected]>

Author: srujzs

DEPS

@@ -184,7 +184,7 @@ 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": "131.0.6778.33",
+  "chrome_tag": "132.0.6834.6",
   "download_firefox": False,
   "firefox_tag": "132.0",