Update GKE SA to follow common naming convention [GONRG-4113]

.gitlab-ci.yml

@@ -44,7 +44,7 @@ variables:
   OSDU_GCP_HELM_CONFIG_SERVICE: schema-config
   OSDU_GCP_HELM_DEPLOYMENT_SERVICE: schema-deploy
   OSDU_GCP_HELM_CONFIG_SERVICE_VARS: "--set data.log_level=INFO  --set data.authorize_api=$OSDU_GCP_AUTHORIZE_API --set data.google_audiences=$GOOGLE_AUDIENCE --set data.partition_api=$OSDU_GCP_PARTITION_API --set data.shared_tenant_name=$OSDU_GCP_TENANT"
-  OSDU_GCP_HELM_DEPLOYMENT_SERVICE_VARS: "--set data.image=$CI_REGISTRY_IMAGE/osdu-gcp:$CI_COMMIT_SHORT_SHA  --set data.serviceAccountName=workload-identity-schema"
+  OSDU_GCP_HELM_DEPLOYMENT_SERVICE_VARS: "--set data.image=$CI_REGISTRY_IMAGE/osdu-gcp:$CI_COMMIT_SHORT_SHA  --set data.serviceAccountName=$OSDU_GCP_SERVICE-k8s"
 
 include:
   - project: "osdu/platform/ci-cd-pipelines"