Remove pydantic pin (#829) #2338

Job	Run time
build packages	17s
linter	1m 20s
unit test / python 3.8	49s
unit test / python 3.9	50s
unit test / python 3.10	57s
unit test / python 3.11	47s
verify packages / python 3.8 / ubuntu-latest	59s
verify packages / python 3.9 / ubuntu-latest	1m 0s
verify packages / python 3.10 / ubuntu-latest	1m 2s
verify packages / python 3.11 / ubuntu-latest	1m 0s
verify packages / python 3.8 / macos-latest	1m 46s
verify packages / python 3.9 / macos-latest	50s
verify packages / python 3.10 / macos-latest	45s
verify packages / python 3.11 / macos-latest	48s
verify packages / python 3.8 / windows-latest	2m 58s
verify packages / python 3.9 / windows-latest	3m 5s
verify packages / python 3.10 / windows-latest	3m 34s
verify packages / python 3.11 / windows-latest	2m 20s
	25m 7s

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