Merge pull request microsoft#261 from microsoft/psl-pk-scaleinstance

fix: update maxReplicas to 1 for WAF deployment scaling

Author: Roopan-Microsoft

infra/main.bicep

@@ -715,7 +715,8 @@ module containerAppBackend 'br/public:avm/res/app/container-app:0.17.0' = {
     ingressTargetPort: 8000
     ingressExternal: true
     scaleSettings: {
-      maxReplicas: enableScaling ? 3 : 1
+      // maxReplicas: enableScaling ? 3 : 1
+      maxReplicas: 1 // maxReplicas set to 1 (not 3) due to multiple agents created per type during WAF deployment
       minReplicas: 1
       rules: enableScaling
         ? [