SageMaker BYOE metrics fix

What's Changed

• Summarization Prompt Template by @dheerajoruganty in #255
• HF dataset loading bug fixes + new config file by @madhurprash in #256
• llama3.2 1b g6e.2xl config file for smaller prompts by @madhurprash in #257

Full Changelog: v2.0.22...v2.0.23