Fix: Remove version field from composer.json and use git tags for versioning

[devin-ai-integration]

Fix: Remove version field from composer.json and use git tags for versioning

This PR fixes the GitHub Actions workflow error by:

1. Removing the version field from composer.json as recommended by Packagist
2. Updating the workflow to use git tags for version detection instead of reading from composer.json
3. Simplifying the workflow by removing unnecessary steps for updating composer.json

Changes

• Removed version field from composer.json to pass strict validation
• Updated workflow to detect current version from git tags
• Removed steps that modify composer.json since we're using git tags for versioning

These changes ensure that the GitHub Actions workflow will run successfully and properly handle versioning through git tags.

Link to Devin run: https://app.devin.ai/sessions/7e5ae8c97d464b8480760363c72c0712
Requested by: Max Prilutskiy (max@lingo.dev)

[devin-ai-integration]

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