`UnboundLocalError` due to build123d breaking changes

[haroldm]

When installing gflabel with pipx install gflabel, trying to generate labels such as gflabel pred "{head(+)} {bolt(50,slotted,round)}\nM3×50" generates the following error:

$ gflabel pred "{head(+)} {bolt(50,slotted,round)}\nM3×50"
Rendering label with width: 1 u
Rendering line 1 ("{head(+)} {bolt(50,slotted,round)}")
Traceback (most recent call last):
  File "/Users/harold/.local/bin/gflabel", line 6, in <module>
    sys.exit(run())
             ^^^^^
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/gflabel/cli.py", line 371, in run
    render_divided_label(
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/gflabel/label.py", line 325, in render_divided_label
    add(renderer.render(label, area_per_label))
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/gflabel/label.py", line 139, in render
    self._do_multiline_render(
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/gflabel/label.py", line 179, in _do_multiline_render
    self._render_single_line(
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/gflabel/label.py", line 284, in _render_single_line
    render = frag.render(
             ^^^^^^^^^^^^
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/gflabel/fragments.py", line 597, in render
    _head = EllipticalCenterArc((-hw + lw, 0), lw, head_h, 90, -90)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/harold/.local/pipx/venvs/gflabel/lib/python3.12/site-packages/build123d/objects_curve.py", line 1202, in __init__
    angular_direction=direction,  # pylint: disable=possibly-used-before-assignment
                      ^^^^^^^^^
UnboundLocalError: cannot access local variable 'direction' where it is not associated with a value

This seems to be due to the following change in build123d v0.11.0:

EllipticalCenterArc.end_angle is deprecated in favor of arc_size

Downgrading to build123d 0.10.0 (pipx runpip gflabel install "build123d==0.10.0") fixes the issue.