Add "BucketKeyEnabled" to S3 schema

[jlarmstrongiv]

See https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-s3-bucket-serversideencryptionrule.html

Closes: #9983

[codecov]

Codecov Report

Merging #9985 (4d2bc95) into master (af39fc0) will not change coverage.
The diff coverage is n/a.

❗ Current head 4d2bc95 differs from pull request most recent head dc0cf8f. Consider uploading reports for the commit dc0cf8f to get more accurate results

@@           Coverage Diff           @@
##           master    #9985   +/-   ##
=======================================
  Coverage   86.18%   86.18%           
=======================================
  Files         329      329           
  Lines       13070    13070           
=======================================
  Hits        11265    11265           
  Misses       1805     1805           

Impacted Files	Coverage Δ
...gins/aws/package/compile/events/s3/configSchema.js	100.00% <ø> (ø)

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[mnapoli]

I'll let you review the technical side @medikoo but looks really simple to merge, +1 for me

[medikoo]

Thank you @jlarmstrongiv !