fix: Pattern-blue-green-upgrade update example for `tfvars` #2393

Job	Run time
Get example directories	14s
Plan examples (patterns/fully-private-cluster)	14s
Plan examples (patterns/istio-multi-cluster/0.vpc)	12s
Plan examples (patterns/aws-vpc-cni-network-policy)	11s
Plan examples (patterns/stateful)	16s
Plan examples (patterns/karpenter)	17s
Plan examples (patterns/elastic-fabric-adapter)	12s
Plan examples (patterns/argocd)	13s
Plan examples (patterns/external-secrets)	10s
Plan examples (patterns/private-public-ingress)	11s
Plan examples (patterns/blue-green-upgrade/eks-blue)	15s
Plan examples (patterns/wireguard-with-cilium)	12s
Plan examples (patterns/agones-game-controller)	14s
Plan examples (patterns/sso-iam-identity-center)	16s
Plan examples (patterns/tls-with-aws-pca-issuer)	11s
Plan examples (patterns/ipv6-eks-cluster)	16s
Plan examples (patterns/multi-tenancy-with-teams)	15s
Plan examples (patterns/fargate-serverless)	11s
Plan examples (patterns/istio)	16s
Plan examples (patterns/blue-green-upgrade/eks-green)	13s
Plan examples (patterns/sso-okta)	11s
Plan examples (patterns/istio-multi-cluster/3.istio-multi-primary)	10s
	4m 50s

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