refactor(publisher-s3): replace the s3 package with just aws-sdk

[malept]

• I have read the contribution documentation for this project.
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• The changes are appropriately documented (if applicable).
• The changes have sufficient test coverage (if applicable).
• The testsuite passes successfully on my local machine (if applicable).

Summarize your changes:

The s3 module appears to no longer be maintained, which means, among other things, outdated dependencies.

I made an attempt to write tests for this, but it appears that aws-sdk-mock has issues mocking S3.upload, so I abandoned it.

Fixes #479.

[codecov]

Codecov Report

Merging #1318 into master will decrease coverage by 1.98%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1318      +/-   ##
==========================================
- Coverage   67.97%   65.98%   -1.99%     
==========================================
  Files          69       69              
  Lines        2011     2011              
  Branches      381      381              
==========================================
- Hits         1367     1327      -40     
- Misses        474      528      +54     
+ Partials      170      156      -14

Impacted Files	Coverage Δ
packages/maker/wix/src/MakerWix.ts	42.85% <0%> (-42.86%)	⬇️
packages/maker/squirrel/src/MakerSquirrel.ts	31.57% <0%> (-42.11%)	⬇️
packages/maker/appx/src/MakerAppX.ts	19.29% <0%> (-33.34%)	⬇️
packages/maker/wix/src/util/author-name.ts	80% <0%> (-10%)	⬇️
packages/maker/appx/src/util/author-name.ts	80% <0%> (-10%)	⬇️
packages/api/core/src/util/electron-version.ts	88.23% <0%> (-7.85%)	⬇️
packages/maker/base/src/Maker.ts	68.57% <0%> (-2.86%)	⬇️

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