Bump pydantic from 2.7.4 to 2.8.1 #513

Job	Run time
Test on Python 3.8 and ubuntu-latest	34s
Test on Python 3.8 and windows-latest	1m 18s
Test on Python 3.8 and macos-latest	56s
Test on Python 3.9 and ubuntu-latest	33s
Test on Python 3.9 and windows-latest	1m 3s
Test on Python 3.9 and macos-latest	28s
Test on Python 3.10 and ubuntu-latest	42s
Test on Python 3.10 and windows-latest	1m 7s
Test on Python 3.10 and macos-latest	24s
Test on Python 3.11 and ubuntu-latest	33s
Test on Python 3.11 and windows-latest	1m 19s
Test on Python 3.11 and macos-latest	24s
Test on Python 3.12 and ubuntu-latest	55s
Test on Python 3.12 and windows-latest	1m 40s
Test on Python 3.12 and macos-latest	42s
check	6s
	12m 44s

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