Update chromite-HEAD.version

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Generated by https://cr-buildbucket.appspot.com/build/8681877739083546081.

Change-Id: I66427a69c7d6a46f92c66c8d09ab5e3ec5f7e3f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/recipes/+/7846809
Bot-Commit: chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>