Fix Dependabot alert: bump pytest to >=9.0.3

Address CVE-2025-71176 and raise minimum Python to 3.10 for pytest 9.

Author: 04kash

pyproject.toml

@@ -4,13 +4,13 @@ version = "0.1.0"
 description = "Agent Skills pack for Red Hat Developer Hub users"
 readme = "README.md"
 license = "Apache-2.0"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 # No runtime dependencies - stdlib only!
 
 [project.optional-dependencies]
 dev = [
-    "pytest>=7.0",
+    "pytest>=9.0.3",
     "pyyaml>=6.0",  # SKILL.md structure tests
     "ruff>=0.4.0",
 ]
@@ -23,7 +23,7 @@ python_functions = ["test_*"]
 
 [tool.ruff]
 line-length = 100
-target-version = "py39"
+target-version = "py310"
 
 [tool.ruff.lint]
 select = ["E", "F", "I", "W"]