fix(kinesis): Limit Aggregated Records to 1MB

[jshlbrd]

Description

• Adds a 1MB limit to the Kinesis KPL aggregator

Motivation and Context

KPL records still need a limit, otherwise the Kinesis transform may generate a record bigger than the 1 MB service limit.

How Has This Been Tested?

Integration tested on data that is known to cause this issue.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.