Basic Info

• Faraday Version: 1.3.0
• Ruby Version: 2.7.2

Issue description

Is there a way to prevent Faraday from sending its User-Agent header (Faraday v1.3.0)? I need it because one of the external servers we are dependent upon has banned it (#1247 (comment)).
Well, I know how to rewrite this header with something else per connection. Also I found how to rewrite it with something else as a default but only when there are no headers added when creating a connection (the new headers overwrite the default ones):

Faraday.default_connection_options = { headers: { user_agent: 'Something 1.2.3' } }
headers = { 'CustomHeader' => 'CustomValue' }
connection = Faraday.new('https://www.google.com', headers: headers) do |f|
  f.response :logger, nil, { headers: true }
end
connection.get

I, [2021-03-15T13:41:49.910701 #7925]  INFO -- request: GET https://www.google.com/
I, [2021-03-15T13:41:49.910993 #7925]  INFO -- request: CustomHeader: "CustomValue" User-Agent: "Faraday v1.3.0"

But I cannot find a way as how to remove that header completely (except for monkey-patching of course). Is there one?

Thank you!