Refactor Rust lint test structure to use RuffTestFixture (#20689)

Co-authored-by: Micha Reiser <micha@reiser.io>

Author: Renkai

Cargo.lock

@@ -72,6 +72,7 @@ dunce = { workspace = true }
 indoc = { workspace = true }
 insta = { workspace = true, features = ["filters", "json"] }
 insta-cmd = { workspace = true }
+ruff_python_trivia = { workspace = true }
 tempfile = { workspace = true }
 test-case = { workspace = true }