chore(deps): upgrade dev dependencies (#503)

Upgrades project dependencies. See details in [workflow run].

[Workflow Run]: https://github.com/cdklabs/cdk-generate-synthetic-examples/actions/runs/7704313380

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*Automatically created by projen via the "upgrade-dev-deps-main" workflow*

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Co-authored-by: github-actions <github-actions@github.com>