chore(deps): update actions/upload-artifact action to v4 #698

Job	Run time
Publish Charm / Generate the Charm Matrix	3s
Run Tests / Lint	12s
Run Tests / Unit tests (katib-controller)	21s
Run Tests / Integration tests (microk8s) (katib-controller)	23m 49s
Run Tests / Unit tests (katib-db-manager)	13s
Run Tests / Test the bundle	1h 0m 34s
Run Tests / Integration tests (microk8s) (katib-db-manager)	30m 48s
Run Tests / Check libraries (katib-controller) / Check libraries	37s
Run Tests / Check libraries (katib-controller) / Lint	10s
Run Tests / Check libraries (katib-db-manager) / Check libraries	35s
Run Tests / Check libraries (katib-db-manager) / Lint	10s
Run Tests / Check libraries (katib-ui) / Check libraries	45s
Run Tests / Check libraries (katib-ui) / Lint	11s
Run Tests / Terraform (katib-controller) / Lint Terraform	10s
Run Tests / Terraform (katib-db-manager) / Lint Terraform	10s
Run Tests / Terraform (katib-ui) / Lint Terraform	8s
Run Tests / Terraform (katib-controller) / Apply / Apply Terraform	6m 2s
Run Tests / Terraform (katib-controller) / Check / Check Terraform	7s
Run Tests / Terraform (katib-db-manager) / Apply / Apply Terraform	5m 26s
Run Tests / Terraform (katib-db-manager) / Check / Check Terraform	8s
Run Tests / Terraform (katib-ui) / Apply / Apply Terraform	4m 52s
Run Tests / Terraform (katib-ui) / Check / Check Terraform	11s
Publish Charm / Publish Charm (./charms/katib-ui)	21m 22s
Publish Charm / Publish Charm (./charms/katib-controller)	13m 46s
Publish Charm / Publish Charm (./charms/katib-db-manager)	13m 31s
	3h 4m 21s

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