Fix "FA100", # Missing from __future__ import annotations, but uses…

… `typing.Optional` (red-hat-data-services#1441)

Signed-off-by: Jiri Daněk <jdanek@redhat.com>

pyproject.toml

@@ -126,7 +126,6 @@ ignore = [
   "B006", # Do not use mutable data structures for argument defaults
   "COM812", # Trailing comma missing
   "F841", # Local variable `response` is assigned to but never used
-  "FA100", # Missing `from __future__ import annotations`, but uses `typing.Optional`
   "INP001", # File `ods_ci/tests/Resources/Page/ODH/JupyterHub/jupyter-helper.py` is part of an implicit namespace package. Add an `__init__.py`.
   "N806", # Variable `outputText` in function should be lowercase
   "N813", # Camelcase `ElementTree` imported as lowercase `et`