Update got dependency to avoid deprecation warning

[pbvahlst]

using node 12.9 I get af deprecation warning:

[DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated

Which seems to be related to an old version of the "got" module. Could the dependency be updated?

[und3rs]

Same issue.

I thinks it is related to timeout in options. After adding timeout value in options, the warning is occured in my case.

[jeffski]

Posted a similar ticket just now. I don't think streaming is working with the version of got used by download. V11, the latest version handles streams correctly.

[FeelyChau]

@und3rs @pbvahlst Have a look #212