Switch formatting from black to ruff-format (#102893)

Co-authored-by: Franck Nijhof <git@frenck.dev>

script/hassfest/serializer.py

@@ -2,11 +2,10 @@
 from __future__ import annotations
 
 from collections.abc import Collection, Iterable, Mapping
+import shutil
+import subprocess
 from typing import Any
 
-import black
-from black.mode import Mode
-
 DEFAULT_GENERATOR = "script.hassfest"
 
 
@@ -72,7 +71,14 @@ To update, run python3 -m {generator}
 
 {content}
 """
-    return black.format_str(content.strip(), mode=Mode())
+    ruff = shutil.which("ruff")
+    if not ruff:
+        raise RuntimeError("ruff not found")
+    return subprocess.check_output(
+        [ruff, "format", "-"],
+        input=content.strip(),
+        encoding="utf-8",
+    )
 
 
 def format_python_namespace(