fix: exclude prerelease tags when finding latest version

[avihut]

Summary

Fixes bump-version workflow to exclude prerelease tags (canary, beta) when determining the latest stable version.

Problem: The workflow was using git tag -l 'v*.*.*' | sort -V | tail -n1 which included prerelease tags like v0.2.0-canary.3. This caused the version to jump from v0.1.28 to v0.2.1 unexpectedly.

Solution: Add grep -v '-' to filter out tags containing hyphens (prerelease indicators).

- LATEST=$(git tag -l 'v*.*.*' | sort -V | tail -n1)
+ LATEST=$(git tag -l 'v*.*.*' | grep -v '-' | sort -V | tail -n1)

Test plan

• After merge, next stable release should increment from v0.2.1 to v0.2.2 (not pick up canary/beta tags)

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