fix: apply timeout to all web3 connection types

[iamdefinitelyahuman]

What I did

Apply timeout to all types of web3 connections.

How to verify it

Run the tests.

[codecov-commenter]

Codecov Report

Merging #549 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #549   +/-   ##
=======================================
  Coverage   88.19%   88.19%           
=======================================
  Files          56       56           
  Lines        6304     6304           
  Branches     1392     1392           
=======================================
  Hits         5560     5560           
  Misses        514      514           
  Partials      230      230           

Impacted Files	Coverage Δ
brownie/network/web3.py	97.19% <100.00%> (ø)

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