Step webapp maxSurge 25% -> 50% to speed deploys (#62179)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: heiskr

config/kubernetes/production/deployments/webapp.yaml

@@ -14,7 +14,7 @@ spec:
       # Prevents capacity loss during deploys. Safe because we're over-provisioned.
       maxUnavailable: 0
       # Percentage so it scales with replica count changes.
-      maxSurge: '25%'
+      maxSurge: '50%'
   selector:
     matchLabels:
       app: webapp