CI: Increase memory limit for brig to 1Gi (#3751)

Co-authored-by: Igor Ranieri <igor@elland.me>

Author: akshaymankar

hack/helm_vars/wire-server/values.yaml.gotmpl

@@ -34,7 +34,7 @@ brig:
   resources:
     requests: {}
     limits:
-      memory: 512Mi
+      memory: 1Gi
   config:
     externalUrls:
       nginz: https://kube-staging-nginz-https.zinfra.io