v0.45.0

What's Changed

• Modernizing VertexAI models in tests by @jamesbraza in #420
• Removed duplicate 'return' text by @jamesbraza in #418
• chore(deps): lock file maintenance by @renovate[bot] in #419
• Added estimate_message_tokens to LMI by @jamesbraza in #421
• chore(deps): lock file maintenance by @renovate[bot] in #423
• chore(deps): update actions/download-artifact action to v8 by @renovate[bot] in #422
• Loosening actions to not have to call tools by @sidnarayanan in #424

Full Changelog: v0.44.1...v0.45.0