feat(azure): Upgrade postgres SKU for prod/yt01 (#1450)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Upgraded PostgreSQL service configuration to improve performance with
a new SKU name: `Standard_D4ads_v5`.
  
- **Bug Fixes**
- Resolved inconsistencies in PostgreSQL configuration parameters across
infrastructure files.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: oskogstad

.azure/infrastructure/prod.bicepparam

@@ -31,8 +31,8 @@ param slackNotifierSku = {
 }
 param postgresConfiguration = {
   sku: {
-    name: 'Standard_B1ms'
-    tier: 'Burstable'
+    name: 'Standard_D4ads_v5'
+    tier: 'GeneralPurpose'
   }
   enableQueryPerformanceInsight: false
 }

.azure/infrastructure/yt01.bicepparam

@@ -31,8 +31,8 @@ param slackNotifierSku = {
 }
 param postgresConfiguration = {
   sku: {
-    name: 'Standard_B1ms'
-    tier: 'Burstable'
+    name: 'Standard_D4ads_v5'
+    tier: 'GeneralPurpose'
   }
   enableQueryPerformanceInsight: true
 }