Update aws-sdk-go dependency to 1.6.12

[justinsb]

1.6.12 = c6fc52983ea2375810aa38ddb5370e9cdf611716

[codecov-io]

Current coverage is 51.21% (diff: 100%)

Merging #2154 into master will decrease coverage by 10.02%

@@             master      #2154   diff @@
==========================================
  Files           125        125           
  Lines         11436      11436           
  Methods           0          0           
  Messages          0          0           
  Branches          0          0           
==========================================
- Hits           7004       5857   -1147   
- Misses         3545       4833   +1288   
+ Partials        887        746    -141   

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[dmcgowan]

Please rebase this, just merged a PR which updates to 1.6.9, so resolving vendor.conf and revendoring should do the trick. Trying to track the updates we might be pulling in, is there anything in particular we should highlight in the update from 1.6.9 to 1.6.12?

[justinsb]

@dmcgowan thanks - rebased and fixed.

Looking at the diff, there isn't much between 1.6.9 and 1.6.12. There are some optimizations I would characterize as micro-optimizations, and a few endpoint definitions. I wasn't aware of the concurrent pull to 1.6.9 and that is new enough for me. I'm happy to either close (or for you to close) this PR, or if we like to stay on the latest version it's here if you need it :-)

[dmcgowan]

@justinsb thanks for looking into that. I would rather just do the update now to get on the latest since it is early enough in the next release cycle to give people a chance to test. The previous update to 1.6.9 was far more risky so will go ahead and merge this in when tests pass.

[dmcgowan]

LGTM