feat: increase camunda PostgreSQL flexible SKU in PROD

[bancey]

Jira link (if applicable)

CHG5015809

Change description

Increase PostgreSQL flexible sku in prod to match perftest.

Checklist

• commit messages are meaningful and follow good commit message guidelines
• README and other documentation has been updated / added (if needed)
• tests have been updated / new tests has been added (if needed)
• Does this PR introduce a breaking change

[hmcts-jenkins-a-to-c]

Plan Result (aat)

Plan: 0 to add, 1 to change, 0 to destroy.

• Update
  • module.postgresql_flexible.azurerm_postgresql_flexible_server.pgsql_server

Change Result (Click me)

  # module.postgresql_flexible.azurerm_postgresql_flexible_server.pgsql_server will be updated in-place
  ~ resource "azurerm_postgresql_flexible_server" "pgsql_server" {
        id                            = "/subscriptions/1c4f0704-a29e-403d-b719-b90c34ef14c9/resourceGroups/hmcts-camunda-v14-flexible-data-aat/providers/Microsoft.DBforPostgreSQL/flexibleServers/hmcts-camunda-v14-flexible-aat"
        name                          = "hmcts-camunda-v14-flexible-aat"
        tags                          = {
            "application"         = "core"
            "autoShutdown"        = "true"
            "builtFrom"           = "https://github.com/HMCTS/camunda-bpm.git"
            "businessArea"        = "CFT"
            "contactSlackChannel" = "#platops-help"
            "environment"         = "staging"
            "managedBy"           = "Software Engineering"
        }
        # (16 unchanged attributes hidden)

      + high_availability {
          + mode = "ZoneRedundant"
        }

        # (2 unchanged blocks hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.