chore(deps): update canonical/charming-actions action to v2.4.0 #593

Job	Run time
Run Tests / Observability Integration Test (1.25-strict/stable)	16m 45s
Run Tests / Observability Integration Test (1.26-strict/stable)	14m 29s
Run Tests / Integration Test (1.25-strict/stable)	19m 20s
Run Tests / Integration Test (1.26-strict/stable)	18m 53s
Publish Charm / Generate the Charm Matrix	4s
Run Tests / Lint Code (pilot)	31s
Run Tests / Lint Code (gateway)	40s
Run Tests / Unit Test (pilot)	45s
Run Tests / Unit Test (gateway)	41s
Run Tests / Check libraries (istio-gateway) / Check libraries	3s
Run Tests / Check libraries (istio-gateway) / Lint	11s
Run Tests / Check libraries (istio-pilot) / Check libraries	27s
Run Tests / Check libraries (istio-pilot) / Lint	15s
Publish Charm / Publish Charm (./charms/istio-pilot)	4m 27s
Publish Charm / Publish Charm (./charms/istio-gateway)	3m 30s
	1h 21m 1s

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