Custom renovate datasource for kubernetes json schema

[viceice]

need to automatically update versions from https://github.com/yannh/kubernetes-json-schema

helm-charts/.github/workflows/ci.yaml

Lines 59 to 66 in fa7bf3a

	# from https://github.com/yannh/kubernetes-json-schema
	- v1.28.15
	- v1.29.15
	- v1.30.14
	- v1.31.12
	- v1.32.8
	- v1.33.4
	- v1.34.0