Bump aws-sdk-s3 from 1.17.0 to 1.20.0

[greysteil]

Bumps aws-sdk-s3 from 1.17.0 to 1.20.0.

Changelog

Sourced from aws-sdk-s3's changelog.

1.20.0 (2018-09-19)

• Feature - API update.

1.19.0 (2018-09-06)

• Feature - Adds code paths and plugins for future SDK instrumentation and telemetry.

1.18.0 (2018-09-05)

• Feature - API update.

1.17.1 (2018-08-29)

• Issue - Update example for bucket#url (Github Issue#1868)

• Issue - Support opt-out counting #presigned_url as #api_requests (Github Issue#1866)

Commits

• See full diff in compare view

(This is an example of the kind of PRs Dependabot creates, so you can see it in action alongside #4. It won't automatically rebase or any of the clever stuff Dependabot normally does because I've manually copied it across, though.)

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[djbender]

@greysteil could you sign our CLA so we can get this and #6 merged?

[greysteil]

Done, but it doesn't seem happy, maybe because the commit is from Dependabot?

[djbender]

Yep, we need the commit author to sign the CLA. Is that something you're able to do?

If @dependabot-bot is unable to do so, you could amend these commits as yourself and push them?

[greysteil]

I'm swamped at the moment, and have changed computer since I created this. I think the easiest approach is for me to close it and for you to handle separately. Thanks for being so inclusive with the desire to merge it, though!

[djbender]

OK! Sorry about that. We'll get these dependencies updated separately. :)