fix: tighten confirm_purchase regex to match Test.*Purchase

Made-with: Cursor

Author: ajpallares

e2e-tests/maestro/utils/confirm_purchase.yaml

@@ -4,6 +4,6 @@ appId: com.revenuecat.automatedsdktests
 name: Confirm purchase - Test Store Purchase Alert
 
 ---
-- assertVisible: "Test.*[Pp]urchase"
+- assertVisible: "Test.*Purchase"
 - tapOn:
     text: "(?i)test valid purchase"