Update BrowserStack configuration automatically from BrowserStack

Update BrowserStack configuration from the support matrix from BrowserStacks

Following code updates the configurations that will will be used by

`TASK_ID = (ENV['TASK_ID'] || 0).to_i
print_info ENV['CONFIG_FILE']
CONFIG_FILE = ENV['CONFIG_FILE'] || 'windows/win10/win10_chrome_81.config.yml'
CONFIG = YAML.safe_load(File.read("./spec/support/browserstack/#{CONFIG_FILE}"))
CONFIG['user'] = ENV['BROWSERSTACK_USERNAME'] || ''
CONFIG['key'] = ENV['BROWSERSTACK_ACCESS_KEY'] || ''`

This needs to be improved and updated based on the current browser stacks supporting capabilities