ci: bump juju, dependencies + pin pip #1225

Job	Run time
Publish Charm / Generate the Charm Matrix	3s
Run Tests / Observability Integration Test (1.25-strict/stable)	38m 5s
Run Tests / Integration Test (1.27-strict/stable, integration)	40m 4s
Run Tests / Observability Integration Test (1.26-strict/stable)	38m 36s
Run Tests / Integration Test (1.27-strict/stable, integration-tls-provider)	38m 44s
Run Tests / Lint Code (pilot)	23s
Run Tests / Integration Test (1.27-strict/stable, integration-tls-secret)	39m 8s
Run Tests / Lint Code (gateway)	24s
Run Tests / Integration Test (1.30-strict/stable, integration)	40m 8s
Run Tests / Unit Test (pilot)	39s
Run Tests / Integration Test (1.30-strict/stable, integration-tls-provider)	39m 52s
Run Tests / Unit Test (gateway)	34s
Run Tests / Integration Test (1.30-strict/stable, integration-tls-secret)	39m 45s
Run Tests / Check libraries (istio-gateway) / Lint	8s
Run Tests / Check libraries (istio-pilot) / Check libraries	28s
Run Tests / Check libraries (istio-gateway) / Check libraries	26s
Run Tests / Check libraries (istio-pilot) / Lint	13s
Run Tests / Terraform (gateway) / Check / Check Terraform	6s
Run Tests / Terraform (gateway) / Apply / Apply Terraform	5m 19s
Run Tests / Terraform (gateway) / Lint / Lint Terraform	7s
Run Tests / Terraform (pilot) / Check / Check Terraform	6s
Run Tests / Terraform (pilot) / Apply / Apply Terraform	5m 16s
Run Tests / Terraform (pilot) / Lint / Lint Terraform	8s
Publish Charm / Publish Charm (./charms/istio-gateway)	15m 9s
Publish Charm / Publish Charm (./charms/istio-pilot)	18m 41s
	6h 2m 32s

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