Function update_commit_dependencies

dev/update_arrow_deps.py:57–64

(dependencies, new_sha)

# }
# to point at a new SHA
def update_commit_dependencies(dependencies, new_sha):
    if dependencies is None:
        return
    for dep_name in dependencies:
        dep = dependencies[dep_name]
        if hasattr(dep, 'get'):
            if dep.get('git') == 'https://github.com/apache/arrow-rs':
                dep['rev'] = new_sha


def update_commit_cargo_toml(cargo_toml, new_sha):