feat: add support for istio 1.22.0 (#427) #184

Job	Run time
Run Tests / Unit Test (pilot)	31s
Run Tests / Unit Test (gateway)	30s
Run Tests / Observability Integration Test (1.25-strict/stable)	35m 43s
Run Tests / Integration Test (1.25-strict/stable, integration)	41m 22s
Run Tests / Observability Integration Test (1.26-strict/stable)	35m 14s
Run Tests / Integration Test (1.25-strict/stable, integration-tls-provider)	38m 17s
Run Tests / Integration Test (1.25-strict/stable, integration-tls-secret)	34m 54s
Run Tests / Lint Code (pilot)	46s
Run Tests / Integration Test (1.26-strict/stable, integration)	38m 11s
Run Tests / Lint Code (gateway)	21s
Run Tests / Integration Test (1.26-strict/stable, integration-tls-provider)	33m 45s
Run Tests / Integration Test (1.26-strict/stable, integration-tls-secret)	41m 13s
Run Tests / Check libraries (istio-gateway) / Check libraries	3s
Run Tests / Check libraries (istio-gateway) / Lint	13s
Run Tests / Check libraries (istio-pilot) / Check libraries	29s
Run Tests / Check libraries (istio-pilot) / Lint	10s
Publish Charm / Generate the Charm Matrix	3s
Publish Charm / Publish Charm (./charms/istio-pilot)	25m 42s
Publish Charm / Publish Charm (./charms/istio-gateway)	3m 27s
	5h 30m 54s

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