helm-external-secrets/docs/snippets/gcpsm-parameter-store.yaml

apiVersion: external-secrets.io/v1alpha1
kind: SecretStore
metadata:
  name: secretstore-sample
spec:
  controller: dev
  provider:
      gcpsm:
        auth:
          secretRef:
            secretAccessKeySecretRef:
              name: gcpsm-secret
              key: secret-access-credentials
        projectID: myproject