test: support TOML parsing on Python 3.10

tests/test_jetson_support_tooling.py

@@ -5,13 +5,17 @@ from __future__ import annotations
 import importlib.metadata
 import json
 import sys
-import tomllib
 from pathlib import Path
 from types import SimpleNamespace
 
 import pytest
 import yaml
 
+try:
+    import tomllib
+except ModuleNotFoundError:  # pragma: no cover - exercised by the Python 3.10 CI lane
+    import tomli as tomllib
+
 from scripts import jetson_support
 from scripts import run_conditional_gate
 from scripts import setup_jetson