tests

chore: bump to 0.2.3 #220

Job	Run time
py3.11 unit tests	30s
py3.12 unit tests	25s
py3.10 unit tests	32s
py3.13 unit tests	25s
coverage	40s
style	16s
doc	12s
py3.12 scim2-cli downstream unit tests	15s
py3.13 scim2-cli downstream unit tests	17s
py3.11 scim2-cli downstream unit tests	17s
minimum dependency versions	32s
	4m 21s

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