chore(deps): update actions/checkout action to v4 #590

Job	Run time
Publish Charm / Generate the Charm Matrix	9s
Run Tests / Lint Code (operator)	18s
Run Tests / Integration Test	46m 5s
Run Tests / Observability Integration Test	43m 27s
Run Tests / Lint Code (serving)	11s
Run Tests / Lint Code (eventing)	12s
Run Tests / Unit Test (operator)	25s
Run Tests / Unit Test (serving)	25s
Run Tests / Unit Test (eventing)	18s
Run Tests / Check libraries / Check libraries	2s
Run Tests / Check libraries / Lint	8s
Run Tests / Terraform (eventing) / Apply	0s
Run Tests / Terraform (operator) / Apply	0s
Run Tests / Terraform (serving) / Apply	0s
Run Tests / Terraform (eventing) / Check / Check Terraform	9s
Run Tests / Terraform (operator) / Check / Check Terraform	11s
Run Tests / Terraform (eventing) / Lint / Lint Terraform	13s
Run Tests / Terraform (operator) / Lint / Lint Terraform	11s
Run Tests / Terraform (serving) / Check / Check Terraform	9s
Run Tests / Terraform (serving) / Lint / Lint Terraform	17s
Publish Charm / Publish Charm (./charms/knative-operator)	12m 55s
Publish Charm / Publish Charm (./charms/knative-serving)	11m 15s
Publish Charm / Publish Charm (./charms/knative-eventing)	11m 31s
	2h 8m 31s

Provide feedback