Update google_benchmark

Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/4f31803..8aae0a4

[cleanup] Change `== ""` to `.empty()` on string to avoid clang-tidy warnings (#1271) (Vy Nguyen)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/8aae0a4

TBR=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,mlippautz@chromium.org

Change-Id: I4edce04c4cbc33019942b05ae1fdb094571f0694
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3260155Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#77696}

DEPS

@@ -223,7 +223,7 @@ deps = {
     'condition': 'checkout_fuchsia',
   },
   'third_party/google_benchmark/src': {
-    'url': Var('chromium_url') + '/external/github.com/google/benchmark.git' + '@' + '4f31803ebbf283e24602260e39e63a296d44b0f8',
+    'url': Var('chromium_url') + '/external/github.com/google/benchmark.git' + '@' + '8aae0a4f67af00de0719f1e17c3943a1f50969b7',
   },
   'third_party/googletest/src':
     Var('chromium_url') + '/external/github.com/google/googletest.git' + '@' + 'bf0701daa9f5b30e5882e2f8f9a5280bcba87e77',