Merged PR 3871: Add FX rates integration exposure.

# Description

Adds the fx rates integration as an exposure since it's a downstream dependency just like a dashboard would be.

# Checklist

NA

# Other

NA

Related work items: #25608

models/reporting/exposures.yml

@@ -335,3 +335,19 @@ exposures:
     owner:
       name: Joaquin Ossa
       email: joaquin.ossa@superhog.com
+
+  - name: fx_rates_integration_with_billing_db
+    label: FX Rates integration with Billing DB
+    type: application
+    maturity: high
+    url: https://www.notion.so/knowyourguest-superhog/Currency-Rates-for-apps-integration-1600446ff9c9804faa66f982f294e6e8?pvs=4
+    description: |
+      We currently push our currency rates data into the BillingDB with Airbyte.
+      Application runtimes request currency rates data from there.
+
+    depends_on:
+      - ref('daily_currency_exchange_rates')
+
+    owner:
+      name: Pablo Martin
+      email: pablo.martin@superhog.com