Update dependency ruff to v0.6.8 (#1900)

* Update dependency ruff to v0.6.8

* Run `ruff check .` instead of `ruff .` due to ruff error

* Preface ruff lint keys with .lint to address ruff deprecation warning

* Changes to appease ruff linter

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Micah Jerome Ellison <micah.jerome.ellison@gmail.com>

pyproject.toml

@@ -91,7 +91,7 @@ lint.sequence = [
   "poetry --version",
   "poetry check",
   "ruff --version",
-  "ruff .",
+  "ruff check .",
   "black --version",
   "black --check ."
 ]
@@ -130,7 +130,7 @@ line-length = 88
 target-version = "py310"
 
 # https://beta.ruff.rs/docs/rules/
-select = [ 
+lint.select = [ 
   'F',     # Pyflakes
   'E',     # pycodestyle errors
   'W',     # pycodestyle warnings
@@ -149,11 +149,11 @@ select = [
 ]
 exclude = [".git", ".tox", ".venv", "node_modules"]
 
-[tool.ruff.isort]
+[tool.ruff.lint.isort]
 force-single-line = true
 known-first-party = ["jrnl", "tests"]
 
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "__init__.py" = ["F401"] # unused imports
 
 [build-system]