Introduce an automated workflow to keep the README's Python Dependencies section in sync with requirements.txt. Adds .github/workflows/sync-readme-dependencies.yml which runs scripts/sync_readme_dependencies.py on changes to requirements.txt (or manually), then opens a PR via peter-evans/create-pull-request. Adds the sync_readme_dependencies.py script that parses requirements.txt and replaces a managed block in README.md delimited by <!-- python-dependencies:start --> / <!-- python-dependencies:end -->. Also updates README.md to include those markers and correct dependency names/formatting. Additionally, change create-release.yml to use RELEASE_TOKEN (secrets.RELEASE_TOKEN) for release uploads instead of the repository GITHUB_TOKEN.
dependabot[bot]