chore: update pytest requirement from ~=8.0 to ~=9.0 in /{{cookiecutter.repo_name}} (#127)

Author: dependabot[bot]

{{cookiecutter.repo_name}}/pyproject.toml

@@ -11,7 +11,7 @@ dev = [
     "build~=1.0",
     "pre-commit~=4.0",
     "pyright==1.1.407",
-    "pytest~=8.0",
+    "pytest~=9.0",
     "ruff~=0.14.3",
     "twine~=6.1",
 ]