Update ruff's JSON schema

This updates ruff's JSON schema to [568cf88c6c5b5551a675ae2b13deedec0fe226cb](astral-sh/ruff@568cf88)

src/schemas/json/ruff.json

@@ -498,6 +498,13 @@
         }
       }
     },
+    "per-file-target-version": {
+      "description": "A list of mappings from glob-style file pattern to Python version to use when checking the corresponding file(s).\n\nThis may be useful for overriding the global Python version settings in `target-version` or `requires-python` for a subset of files. For example, if you have a project with a minimum supported Python version of 3.9 but a subdirectory of developer scripts that want to use a newer feature like the `match` statement from Python 3.10, you can use `per-file-target-version` to specify `\"developer_scripts/*.py\" = \"py310\"`.\n\nThis setting is used by the linter to enforce any enabled version-specific lint rules, as well as by the formatter for any version-specific formatting options, such as parenthesizing context managers on Python 3.10+.",
+      "type": ["object", "null"],
+      "additionalProperties": {
+        "$ref": "#/definitions/PythonVersion"
+      }
+    },
     "preview": {
       "description": "Whether to enable preview mode. When preview mode is enabled, Ruff will use unstable rules, fixes, and formatting.",
       "type": ["boolean", "null"]