fix: Fix can't use proxy to access Yahoo api

[yearnfar]

Fix can't use proxy to access Yahoo api

[jbpolle]

Hello,

You would also need to modify the function _get_proxy in data.py as sometimes the proxy variable is transformed in a "frozendict" and this doesn't work anymore. Something like that work for me: if type(proxy) in [dict, frozendict] and "https" in proxy:

[ValueRaider]

Superseded by #1371, closing.