chore: update circleci image to node:12.8.2-browsers which contains chrome 84
chore: update circleci image to node:12.8.2-browsers which contains chrome 84

alexeagle/rules_nodejs,bazelbuild/rules_nodejs,alexeagle/rules_nodejs,alexeagle/rules_nodejs,bazelbuild/rules_nodejs,bazelbuild/rules_nodejs,bazelbuild/rules_nodejs,alexeagle/rules_nodejs,bazelbuild/rules_nodejs