ENH: Upgrade required Python and CMake version in pyproject.toml

ITK no longer produced Python 3.8 packages.
CMake 3.22.1 is required since
InsightSoftwareConsortium/ITK@2fd36ab.

Author: Simon Rit

{{cookiecutter.project_name}}/pyproject.toml

@@ -33,7 +33,7 @@ classifiers = [
     "Topic :: Scientific/Engineering :: Medical Science Apps.",
     "Topic :: Software Development :: Libraries",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dependencies = [
     "itk == 5.4.*",
 ]
@@ -46,7 +46,7 @@ Homepage = "{{ cookiecutter.download_url }}"
 # The versions of CMake to allow. If CMake is not present on the system or does
 # not pass this specifier, it will be downloaded via PyPI if possible. An empty
 # string will disable this check.
-cmake.version = ">=3.16.3"
+cmake.version = ">=3.22.1"
 
 # A list of args to pass to CMake when configuring the project. Setting this in
 # config or envvar will override toml. See also ``cmake.define``.