chore(deps): update actions/upload-artifact action to v4 #793

Job	Run time
Publish Charm / Generate the Charm Matrix	5s
Run Tests / Integration tests (microk8s) (katib-controller)	28m 17s
Run Tests / Integration tests (microk8s) (katib-db-manager)	27m 4s
Run Tests / Lint	13s
Run Tests / Test the bundle	1h 39m 1s
Run Tests / Unit tests (katib-controller)	27s
Run Tests / Unit tests (katib-db-manager)	22s
Run Tests / Check libraries (katib-controller) / Check libraries	30s
Run Tests / Check libraries (katib-db-manager) / Check libraries	35s
Run Tests / Check libraries (katib-controller) / Lint	8s
Run Tests / Check libraries (katib-db-manager) / Lint	12s
Run Tests / Check libraries (katib-ui) / Check libraries	23s
Run Tests / Check libraries (katib-ui) / Lint	9s
Run Tests / Terraform (katib-controller) / Check / Check Terraform	9s
Run Tests / Terraform (katib-controller) / Apply / Apply Terraform	5m 13s
Run Tests / Terraform (katib-controller) / Lint / Lint Terraform	9s
Run Tests / Terraform (katib-db-manager) / Apply / Apply Terraform	5m 38s
Run Tests / Terraform (katib-db-manager) / Check / Check Terraform	7s
Run Tests / Terraform (katib-ui) / Check / Check Terraform	10s
Run Tests / Terraform (katib-db-manager) / Lint / Lint Terraform	7s
Run Tests / Terraform (katib-ui) / Apply / Apply Terraform	6m 8s
Run Tests / Terraform (katib-ui) / Lint / Lint Terraform	8s
Publish Charm / Publish Charm (./charms/katib-ui)	50m 12s
Publish Charm / Publish Charm (./charms/katib-controller)	17m 54s
Publish Charm / Publish Charm (./charms/katib-db-manager)	17m 24s
	4h 20m 45s

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