chore: update modules/sentry-cocoa to 8.20.0 (#3107)

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## Unreleased
+
+### Dependencies
+
+- Bump Cocoa SDK from v8.19.0 to v8.20.0 ([#3107](https://github.com/getsentry/sentry-dotnet/pull/3107))
+  - [changelog](https://github.com/getsentry/sentry-cocoa/blob/main/CHANGELOG.md#8200)
+  - [diff](https://github.com/getsentry/sentry-cocoa/compare/8.19.0...8.20.0)
+
 ## 4.0.0
 
 This major release includes many exciting new features including support for [Profiling](https://docs.sentry.io/platforms/dotnet/profiling/) and [Metrics](https://docs.sentry.io/platforms/dotnet/metrics/)(preview), [AOT](https://sentry.engineering/blog/should-you-could-you-aot) with [Native Crash Reporting](https://github.com/getsentry/sentry-dotnet/issues/2770), [Spotlight](https://spotlightjs.com/), Screenshots on MAUI and much more. Details about these features and other changes are below.