Remove `catbox-s3` dependency of store

[jithine]

What happened:

Store uses catbox-s3 for talking to AWS. Due to it's limitation we removed it for build artifacts, but it's still used for caches end point.

What you expected to happen:

AWS Client should be directly used for any s3 related use cases, instead of catbox-s3.

How to reproduce it:

[fhemberger]

Hi, creator of catbox-s3 here. First of all, thanks, I wasn't aware that you are using my library. I haven't been working with hapi/catbox for a long time and just wanted to point out that the last release of catbox-s3 is already four years old. I already flagged it as 'deprecated' on npm, as I don't intend to release further updates for it.

So I'd recommend to either remove it as dependency in future versions, or let me know if you're interested in maintaining it.

[jithine]

Hello @fhemberger Thanks for the update. We are looking to usie native aws sdk for S3 connections. So we will be removing the dependency once we get to this.