tests

Fix `model_json_schema` for Reference and Path #497

Job	Run time
py unit tests	20s
minimum dependency versions	11s
doc	16s
style	17s
py3.10 unit tests	12s
py3.12 unit tests	11s
py3.14 unit tests	11s
py3.11 unit tests	11s
py3.13 unit tests	13s
py3.12 scim2-server downstream unit tests	19s
py3.14 scim2-cli downstream unit tests	18s
py3.14 scim2-server downstream unit tests	14s
py3.12 scim2-client downstream unit tests	17s
py3.14 scim2-client downstream unit tests	17s
py3.13 scim2-client downstream unit tests	16s
py3.13 scim2-tester downstream unit tests	23s
py3.13 scim2-cli downstream unit tests	15s
py3.12 scim2-cli downstream unit tests	15s
py3.11 scim2-tester downstream unit tests	28s
py3.11 scim2-server downstream unit tests	19s
py3.14 scim2-tester downstream unit tests	23s
py3.13 scim2-server downstream unit tests	16s
py3.11 scim2-cli downstream unit tests	19s
py3.12 scim2-tester downstream unit tests	28s
py3.11 scim2-client downstream unit tests	18s
	7m 7s

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