Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/8d86026..bc4639c

Add installation and build instructions for Python bindings (#1392) (Nicholas Junge)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/bc4639c

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

Change-Id: I1ab826ee75b642f04c753dd43e5fe01e9821cc2d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3640524
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80461}