fix: Bump version properly when running on main

[adamarnesen]

Justification

semantic-release wasn't bumping versions properly or creating github releases. This should fix that

Implementation

manually call changelog and version with semantic-revision then call publish.
We're not using semantic-release to write to pypi because we're using trusted publishing.

Checklist

• I have read and followed the Contributing Guidelines

[Copilot]

Pull request overview

This PR fixes the semantic-release workflow to properly bump versions and create GitHub releases by splitting the semantic-release process into explicit changelog, version, and publish steps.

Key Changes:

• Added explicit semantic-release changelog call before version bumping
• Separated GitHub release creation into its own workflow step using semantic-release publish --skip-build
• Maintained the existing pattern of building and publishing to PyPI separately using Poetry and trusted publishing

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