[Bugfix] Fix the remaining Python 3.10 breakages (#7985)

Signed-off-by: Armaan Amatya <armaanamatya2014@gmail.com>
Signed-off-by: Yueqian Lin <70319226+linyueqian@users.noreply.github.com>
Co-authored-by: Yueqian Lin <70319226+linyueqian@users.noreply.github.com>
Co-authored-by: Hongsheng Liu <liuhongsheng4@huawei.com>

tests/model_executor/models/indextts2/test_optional_dependencies.py

@@ -9,9 +9,13 @@ import types
 from pathlib import Path
 
 import pytest
-import tomllib
 from packaging.requirements import Requirement
 
+try:
+    import tomllib
+except ModuleNotFoundError:  # Python < 3.11
+    import tomli as tomllib  # type: ignore[no-redef]
+
 pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
 
 ROOT = Path(__file__).parents[4]