#195 Fix buffer overflow exception handling

[2rba]

Description

@logger.error(Deimos::KafkaMessage.decoded(messages)) in the rescue block fails to decode the message and causes wrong exception raised This PR:

• fixes message decoding
• adds rescue block around decoding call to make sure if decode is misconfigured that does not interfere with original exception

Fixes #195

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

tests added

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added a line in the CHANGELOG describing this change, under the UNRELEASED heading
• [ ] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

[dorner]

Thanks so much for the contribution!