chore: bump synthtool to skip venv for nox format

[ohmayr]

bump synthtool to skip venv for nox format

[gemini-code-assist]

Summary of Changes

Hello @ohmayr, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the version of the synthtool library used within the project's Docker build process. The primary goal of this update is to optimize the nox format command by allowing it to bypass the creation of a virtual environment, which should streamline the formatting workflow.

Highlights

• Synthtool Version Bump: The synthtool dependency in the .generator/Dockerfile has been updated to a newer commit hash (5dc7e990bb38ef8bc3d71cae6304e74d3037b9ef). This update is intended to enable synthtool to skip virtual environment creation for nox format operations.

Changelog

• .generator/Dockerfile
  • Updated the git checkout hash for the synthtool repository to a newer version.

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[gemini-code-assist]

Code Review

This pull request updates the pinned commit for synthtool in the generator Dockerfile. The change is correct, but I've added a suggestion to include an inline comment explaining the purpose of the new commit hash. This will improve code maintainability by providing context directly where it's needed.

[gemini-code-assist]

For maintainability, it's good practice to add a comment explaining why a specific commit hash is being used. This provides context for future developers directly in the code, explaining the purpose of this dependency pin without needing to check git history or pull requests.

    git checkout 5dc7e990bb38ef8bc3d71cae6304e74d3037b9ef # Pin to commit that skips venv for nox format