Update test/coverage packages and push to codecov

[piksel]

Code coverage is currently not being reported. This updates packages and removes the ones not being used, as well as adding upload of coverage reports to Codecov.

I certify that I own, and have sufficient rights to contribute, all source code and related material intended to be compiled or integrated with the source code for the SharpZipLib open source product (the "Contribution"). My Contribution is licensed under the MIT License.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@6e95ec2). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #602   +/-   ##
=========================================
  Coverage          ?   73.12%           
=========================================
  Files             ?       68           
  Lines             ?     8722           
  Branches          ?        0           
=========================================
  Hits              ?     6378           
  Misses            ?     2344           
  Partials          ?        0           

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