Fix formatting with custom executable

pylsp_ruff/plugin.py

@@ -137,7 +137,7 @@ def pylsp_format_document(workspace: Workspace, document: Document) -> Generator
         # enabled via the format config property. This allows for things like
         # specifying `format = ["I"]` to get import sorting as part of formatting.
         new_text = run_ruff(
-            settings=PluginSettings(ignore=["ALL"], select=settings.format),
+            settings=PluginSettings(ignore=["ALL"], select=settings.format, executable=settings.executable),
             document_path=document.path,
             document_source=new_text,
             fix=True,