fix(changelog): Bump alpha version number

Author: krystofwoldrich

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 - Session Replay for Android ([#3339](https://github.com/getsentry/sentry-java/pull/3339))
 
-We released our fourth Alpha version of the SDK with support. To get access, it requires adding your Sentry org to our feature flag. Please let us know on the [waitlist](https://sentry.io/lp/mobile-replay-beta/) if you're interested
+We released our fifth Alpha version of the SDK with support. To get access, it requires adding your Sentry org to our feature flag. Please let us know on the [waitlist](https://sentry.io/lp/mobile-replay-beta/) if you're interested
 
 ## 7.12.0-alpha.3