docs: add JSON Schema for policy #6544

Job	Run time
path-filter	4s
integration-test / integration-test-cargo	1m 29s
integration-test / integration-test	3m 6s
integration-test / integration-test-all-envs (windows-latest)	2m 27s
integration-test / integration-test-all-envs (ubuntu-24.04)	46s
integration-test / integration-test-all-envs (macos-13)	1m 34s
integration-test / integration-test-all-envs (macos-14)	1m 18s
renovate-config-validator	0s
test-docker-prebuilt	0s
ghalint	0s
update-aqua-checksums	0s
test / test	1m 57s
go-mod-tidy / go-mod-tidy / go-mod-tidy	16s
status-check	0s
enable-automerge	0s
	12m 57s

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