Release v1.2.0

What's Changed

• Bump actions/setup-python from 5 to 6 by @dependabot[bot] in #92
• Bump actions/attest-build-provenance from 2 to 3 by @dependabot[bot] in #90
• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #87
• Bump serde from 1.0.219 to 1.0.223 by @dependabot[bot] in #97
• Bump serde_json from 1.0.143 to 1.0.145 by @dependabot[bot] in #98
• Bump actions/download-artifact from 4 to 5 by @dependabot[bot] in #86
• Add training and export functionality with Python bindings by @mosuka in #105

Full Changelog: v1.1.0...v1.2.0