drop 3.8, add 3.11 in template pyproject

{{cookiecutter.package_name}}/pyproject.toml

@@ -3,7 +3,7 @@ name = "{{cookiecutter.package_name}}"
 authors = [{name = "{{cookiecutter.full_name}}", email= "{{cookiecutter.email}}"}]
 description = "{{cookiecutter.short_description}}"
 readme = "README.md"
-requires-python = ">=3.8.0"
+requires-python = ">=3.9.0"
 dynamic = ["version"]
 
 {% if cookiecutter.license == "MIT" -%}
@@ -24,9 +24,9 @@ classifiers = [
     "Development Status :: 2 - Pre-Alpha",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Operating System :: OS Independent",
     {% if cookiecutter.license == "MIT" -%}
     "License :: OSI Approved :: MIT License",
@@ -92,7 +92,7 @@ exclude = ["tests*"]
 addopts = "--cov={{cookiecutter.module_name}}"
 
 [tool.black]
-target-version = ['py38', 'py39', 'py310']
+target-version = ['py39', 'py310', py311]
 skip-string-normalization = false
 line-length = 79
 
@@ -134,14 +134,14 @@ archs = ["x86_64", "arm64"]
 [tool.tox]
 legacy_tox_ini = """
 [tox]
-envlist = py{38,39,310}
+envlist = py{39,310,311}
 isolated_build = True
 
 [gh-actions]
 python =
-    3.8: py38
     3.9: py39
     3.10: py310
+    3.11: py311
 
 [testenv]
 extras =