chore: release keptn 2.3.0 #18316

Job	Run time
Prepare CI Run	8s
Store tag of the built images	2s
Unit Tests (lifecycle-operator, lifecycle-operator/)	5m 8s
Build Docker Image (lifecycle-operator, lifecycle-operator/)	2m 53s
Unit Tests (metrics-operator, metrics-operator/)	47s
Build Docker Image (metrics-operator, metrics-operator/)	3m 16s
Unit Tests (scheduler, scheduler/)	48s
Build Docker Image (scheduler, scheduler/)	2m 40s
Unit Tests (certificate-operator, keptn-cert-manager/)	1m 36s
Build Docker Image (deno-runtime, runtimes/deno-runtime/)	17s
Build Docker Image (python-runtime, runtimes/python-runtime/)	30s
Build Docker Image (certificate-operator, keptn-cert-manager/)	2m 49s
Component Tests / Component Tests	2m 15s
Publish helm chart changes to charts repo	0s
Integration Tests Allowed Namespaces / Run Chainsaw Tests	3m 6s
End to End Tests / Run E2E Tests (lifecycle-operator, lifecycle-operator/)	3m 21s
Integration Tests Cert Manager / Run Chainsaw Tests	2m 16s
End to End Tests / Run E2E Tests (scheduler, scheduler/)	3m 18s
Integration Tests Lifecycle / Run Chainsaw Tests	9m 28s
Integration Tests Metrics / Run Chainsaw Tests	4m 7s
Load Tests / Run load Tests	6m 59s
Integration Tests (gates_off, cert_manager_io_off) / Run Chainsaw Tests	12m 52s
Integration Tests (gates_off, cert_manager_io_on) / Run Chainsaw Tests	14m 17s
Integration Tests (gates_on, cert_manager_io_off) / Run Chainsaw Tests	11m 48s
	1h 34m 41s

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