fix(feature-flags): update requirements to match each SDK (#15624)

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Author: Litarnus

docs/platforms/php/common/feature-flags/index.mdx

@@ -5,9 +5,9 @@ sidebar_order: 7000
 description: With Feature Flags, Sentry tracks feature flag evaluations in your application, keeps an audit log of feature flag changes, and reports any suspicious updates that may have caused an error.
 ---
 
-## Prerequisites
+## Requirements
 
-- [Sentry SDK](/platforms/php) version `4.18.1` or above.
+<PlatformContent includePath="feature-flags/requirements" />
 
 ## Enable Evaluation Tracking
 

platform-includes/feature-flags/requirements/php.laravel.mdx

@@ -0,0 +1 @@
+- [Laravel SDK](/platforms/php/guides/laravel/) version `4.19.0` or above.

platform-includes/feature-flags/requirements/php.mdx

@@ -0,0 +1 @@
+- [Sentry SDK](/platforms/php) version `4.18.1` or above.