Define noxconfig values as iterable & set defaults with immutable type tuple to reduce warnings

Author: ArBridgeman

noxconfig.py

@@ -51,13 +51,13 @@ class Config:
         "project-template",
         "idioms",
     )
-    python_versions = ["3.9", "3.10", "3.11", "3.12", "3.13"]
-    exasol_versions = ["7.1.9"]
-    plugins = [UpdateTemplates]
+    python_versions: Iterable = ("3.9", "3.10", "3.11", "3.12", "3.13")
+    exasol_versions: Iterable = ("7.1.9",)
+    plugins: Iterable[object] = (UpdateTemplates,)
     # need --keep-runtime-typing, as pydantic with python3.9 does not accept str | None
     # format, and it is not resolved with from __future__ import annotations. pyupgrade
     # will keep switching Optional[str] to str | None leading to issues.
-    pyupgrade_args = ("--py39-plus", "--keep-runtime-typing")
+    pyupgrade_args: Iterable[str] = ("--py39-plus", "--keep-runtime-typing")
 
 
 PROJECT_CONFIG = Config()

project-template/{{cookiecutter.repo_name}}/noxconfig.py

@@ -17,8 +17,8 @@ class Config:
         / "version.py"
     )
     path_filters: Iterable[str] = ()
-    pyupgrade_args = ("--py{{cookiecutter.python_version_min | replace('.', '')}}-plus",)
-    plugins = []
+    pyupgrade_args: Iterable[str] = ("--py{{cookiecutter.python_version_min | replace('.', '')}}-plus",)
+    plugins: Iterable[object] = ()
 
 
 PROJECT_CONFIG = Config()