Chore: Update project metadata and dependency constraints within major version on ranges

[CodeIter]

Update metadata and dependencies to enforce minor/patch updates only: bumped setuptools, tightened Python and dependency version constraints, removed URLs from authors, and added a maintainer.

• Bumped setuptools requirement from "setuptools>=61.0" to "setuptools>=80.0,<81.0"
• Updated Python runtime from ">=3.6" to ">=3.8, <3.14"
• Updated dependency versions:
  • "requests": from ">=2.32.3" to ">=2.32,<3.0"
  • "typer": from "==0.12.3" to ">=0.12.3,<1.0"
  • "rich": from ">=13.7.1" to ">=13.7,<14.0"
  • "python-dotenv": from ">=1.0.1" to ">=1.0,<2.0"
• Removed the URL from authors
• Added a "maintainers" field with Peter Lord's details