Updating boto3 version

[maniarathi]

Previous 1.7-1.8 requirement is incompatible with upload service. Also alphabetized the dependencies.

[xbrianh]

@parthshahva Is Upload prepared for this boto3 version bump?

[sampierson]

@xbrianh yes Upload is the one initiating this (Arathi works on Upload)

[parthshahva]

@maniarathi @sampierson The upgrade of boto3 breaks the use of mock in our tests, leading to a slate of permission denied errors on CreateBucket. We'll need to fix our tests before merging this in.

[xbrianh]

lgtm, merge with caution :)

[codecov-io]

Codecov Report

Merging #282 into master will increase coverage by 0.46%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #282      +/-   ##
==========================================
+ Coverage   83.17%   83.64%   +0.46%     
==========================================
  Files          37       37              
  Lines        1724     1724              
==========================================
+ Hits         1434     1442       +8     
+ Misses        290      282       -8

Impacted Files	Coverage Δ
hca/version.py	100% <100%> (ø)	⬆️
hca/util/__init__.py	87.42% <0%> (+0.28%)	⬆️
hca/cli.py	66.95% <0%> (+6.08%)	⬆️

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[kislyuk]

Only direct package dependencies (those imported by the library) should be listed here. Dependencies should manage their sub-dependencies.