[gdb/python] Run black on gdb/gdbarch_components.py

The sourceware buildbot reported "python black formatter ( failure )" at
commit b034bb3877 ("[gdb] Add gdbarch_dwarf2_reg_piece_offset hook").

Fix this by running the precommit hooks in a container with Python 3.11 using:
...
$ pre-commit run --files gdb*/*
...

gdb/gdbarch_components.py

@@ -837,10 +837,7 @@ register as defined by the ABI.
 """,
     type="ULONGEST",
     name="dwarf2_reg_piece_offset",
-    params=[
+    params=[("int", "regnum"), ("ULONGEST", "size")],
-        ("int", "regnum"),
-        ("ULONGEST", "size")
-    ],
     predefault="default_dwarf2_reg_piece_offset",
     invalid=False,
 )