Update the license tag to SPDX

See https://gitlab.com/fedora/legal/fedora-license-data/-/merge_requests/61

The LICENSE file differs from the text at https://spdx.org/licenses/Python-2.0.1.html
only by:

 - not saying "Python 2.0.1" but "Python" which is considered OK
 - copyright years which is considered OK
 - formatting
 - listing the history and license for code examples from the documentation
   (the documentation is not shipped via this package)

python3.11.spec

@@ -18,7 +18,7 @@ URL: https://www.python.org/
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
 Release: 1%{?dist}
-License: Python
+License: Python-2.0.1
 
 
 # ==================================