fix: web3 ipc timeout

[iamdefinitelyahuman]

What I did

Fix how timeout arg is provided to IPCProvider

How to verify it

Connect to a client via IPC.

[codecov-commenter]

Codecov Report

Merging #554 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #554   +/-   ##
=======================================
  Coverage   88.12%   88.12%           
=======================================
  Files          56       56           
  Lines        6309     6309           
  Branches     1395     1395           
=======================================
  Hits         5560     5560           
- Misses        517      518    +1     
+ Partials      232      231    -1     

Impacted Files	Coverage Δ
brownie/network/web3.py	97.19% <100.00%> (ø)
brownie/network/state.py	91.30% <0.00%> (-1.74%)	⬇️
brownie/network/rpc.py	89.92% <0.00%> (+0.74%)	⬆️

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