fix(apple): Minimum version for UIViewController (#8580)

Fix minimum required version for UIViewController transactions.

Author: philipphofmann

src/docs/product/performance/mobile-vitals.mdx

@@ -84,7 +84,7 @@ While Sentry automatically tracks TTID, [TTFD](#time-to-initial-display-and-time
 
 **For iOS:**
 
-- `>=3.13` for UIViewController transactions
+- `>=7.12.0` for UIViewController transactions
 - `>=8.4.0` for TTID+TTFD, (released April, 2023)
 
 By default, the **Mobile** page displays metrics for the two releases with the highest screen counts for the time range you’ve selected. To choose a different set of releases to compare, use the “release selector” at the top of the page.