fix: Parse pydantic version with regex

[gselzer]

I was getting annoyed by some of the failures coming from here from the prerelease tests in pymmcore-widgets. This fix resolves the parsing errors with Pydantic prereleases.

Traceback (most recent call last):
  File "/Users/runner/hostedtoolcache/Python/3.11.9/x64/bin/mmcore", line 5, in <module>
    from pymmcore_plus._cli import main
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/__init__.py", line 13, in <module>
    from .core import (
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/core/__init__.py", line 25, in <module>
    from ._adapter import DeviceAdapter
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/core/_adapter.py", line 6, in <module>
    from pymmcore_plus.core._device import Device
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/core/_device.py", line 6, in <module>
    from ._property import DeviceProperty
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/core/_property.py", line 7, in <module>
    from .events._device_signal_view import _DevicePropValueSignal
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/core/events/__init__.py", line 6, in <module>
    from ._psygnal import CMMCoreSignaler
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/core/events/_psygnal.py", line 3, in <module>
    from pymmcore_plus.mda import MDAEngine
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/mda/__init__.py", line 1, in <module>
    from ._engine import MDAEngine
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pymmcore_plus/mda/_engine.py", line 9, in <module>
    import useq
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/useq/__init__.py", line 6, in <module>
    from useq._actions import AcquireImage, Action, CustomAction, HardwareAutofocus
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/useq/_actions.py", line 7, in <module>
    from useq._base_model import FrozenModel
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/useq/_base_model.py", line 29, in <module>
    PYDANTIC_VERSION = tuple(int(x) for x in pydantic.__version__.split(".")[:3])
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/useq/_base_model.py", line 29, in <genexpr>
    PYDANTIC_VERSION = tuple(int(x) for x in pydantic.__version__.split(".")[:3])
                             ^^^^^^
ValueError: invalid literal for int() with base 10: '0b1'

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.96%. Comparing base (fec18af) to head (dc2c5a4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #218      +/-   ##
==========================================
- Coverage   94.28%   93.96%   -0.33%     
==========================================
  Files          22       22              
  Lines        1506     1507       +1     
==========================================
- Hits         1420     1416       -4     
- Misses         86       91       +5     

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[tlambert03]

Thanks!