Add support for Python 3.13 to noxfile.py

Author: tleonhardt

docs/requirements.txt

@@ -1,3 +1,6 @@
+
+pyperclip
 Sphinx>=8.1.0
 sphinx-autobuild>=2024.10.3
 sphinx-rtd-theme>=3.0.1
+wcwidth

noxfile.py

@@ -1,7 +1,7 @@
 import nox
 
 
-@nox.session(python=['3.12'])
+@nox.session(python=['3.13'])
 def docs(session):
     session.install(
         'sphinx',
@@ -17,7 +17,7 @@ def docs(session):
     )
 
 
-@nox.session(python=['3.8', '3.9', '3.10', '3.11', '3.12'])
+@nox.session(python=['3.8', '3.9', '3.10', '3.11', '3.12', '3.13'])
 @nox.parametrize('plugin', [None, 'ext_test', 'template', 'coverage'])
 def tests(session, plugin):
     if plugin is None:
@@ -41,7 +41,7 @@ def tests(session, plugin):
         )
 
 
-@nox.session(python=['3.8', '3.9', '3.10', '3.11', '3.12'])
+@nox.session(python=['3.8', '3.9', '3.10', '3.11', '3.12', '3.13'])
 @nox.parametrize('step', ['mypy', 'flake8'])
 def validate(session, step):
     session.install('invoke', './[validate]')