fix ruff runtime warnings

Author: staskh

pyproject.toml

@@ -105,18 +105,18 @@ exclude = [
     "tests/",
     "notebooks/"
 ]
-select = [
+lint.select = [
     "E",   # pycodestyle errors
     "W",   # pycodestyle warnings
     "F",   # pyflakes
     "I",   # isort
     "C",   # flake8-comprehensions
     "B",   # flake8-bugbear
 ]
-ignore = []
+lint.ignore = []
 
-[tool.ruff.isort]
+[tool.lint.isort]
 known-first-party = ["iglu_python"]
 
-[tool.ruff.per-file-ignores]
+[tool.lint.per-file-ignores]
 "tests/*" = ["E501"]  # Allow long lines in tests