chore: add warning when running cibuildwheel with python<3.11

cibuildwheel/__main__.py

@@ -402,6 +402,15 @@ def get_build_identifiers(
 def detect_warnings(*, options: Options, identifiers: Iterable[str]) -> list[str]:
     warnings = []
 
+    python_version_deprection = ((3, 11), 3)
+    if sys.version_info[:2] < python_version_deprection[0]:
+        python_version = ".".join(map(str, python_version_deprection[0]))
+        msg = (
+            f"cibuildwheel {python_version_deprection[1]}+ will require Python {python_version}+, "
+            "please upgrade your python version."
+        )
+        warnings.append(msg)
+
     # warn about deprecated {python} and {pip}
     for option_name in ["test_command", "before_build"]:
         option_values = [getattr(options.build_options(i), option_name) for i in identifiers]