Add fetch support with axios

[suhaotian]

Since Axios v1.7.0, Axios supports the fetch adapter.

In this PR, we bump the Axios version to the latest and add a fetch option, so when we want to use fetch, we need to pass true as the second parameter like new SMSAPI('token', true).

The unit test issues here have no effect, because default is use http adapter, but Nock doesn't support fetch and only supports the http module.

[suhaotian]

Fix #220