Fix reflection issue for `call to method parse on javax.xml.parsers.SAXParser`

[vincentjames501]

We noticed when loading clj-http with *warn-on-reflection* set to true the following:

Reflection warning, clj_http/client.clj:479:26 - call to method parse on javax.xml.parsers.SAXParser can't be resolved (argument types: unknown, unknown).

https://github.com/dakrone/clj-http/blob/3.x/src/clj_http/client.clj#L478

[vincentjames501]

Looks like this was already fixed in #650 . Could we get a new release sometime? Thanks!