Stabilize setup.py formatting for the pre-commit workflow

[Copilot]

The pre-commit GitHub Actions job was failing because black reformatted setup.py in CI. This change makes the affected dependency list expression structurally explicit so it remains stable under Black.

• CI failure source

  • Normalize the install_requires expression in setup.py, which was the only file reported by the failing black hook.

• Change

  • Wrap the requirements + [...] expression in explicit parentheses inside setup(...).
  • Preserve existing packaging behavior; this is a formatting-stability change only.

• Resulting shape

  install_requires=(
      requirements
      + [
          str(r)
          for r in pkg_resources.parse_requirements(
              open(os.path.join(os.path.dirname(__file__), "requirements.txt"))
          )
      ]
  ),