chore: update scripts/update-cocoa.sh to 8.42.0-beta.2

[krystofwoldrich]

Bump to cocoa beta to include latest replay fixes. Mainly masking improvements (for fast animations).

[antonis]

LGTM 🎉

[github-actions]

Android (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	354.20 ms	414.60 ms	60.40 ms
Size	7.15 MiB	8.37 MiB	1.22 MiB

[krystofwoldrich]

Sadly CI is not happy. I'm looking into this.

[RNSentry] Compiling RNSentryReplayUnmask.mm
[RNSentry] Compiling RNSentryReplayMask.mm
[React-RCTFabric] Linking RCTFabric
[RNSentry] Compiling RNSentryReplayBreadcrumbConverterHelper.m
Error: include of non-modular header inside framework module 'Sentry.SentrySessionReplayIntegration_Hybrid': '/Users/runner/work/sentry-react-native/sentry-react-native/dev-packages/e2e-tests/react-native-versions/0.76.0/RnDiffApp/ios/Pods/Sentry/Sources/Sentry/include/SentrySessionReplayIntegration.h' [-Werror,-Wnon-modular-include-in-framework-module]
#    import "SentrySessionReplayIntegration.h"
            ^
Error: could not build module 'Sentry'
#import <Sentry/SentryDefines.h>
 ~~~~~~~^

[github-actions]

Android (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	445.88 ms	434.30 ms	-11.58 ms
Size	17.74 MiB	20.09 MiB	2.35 MiB

[github-actions]

iOS (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1246.66 ms	1244.80 ms	-1.86 ms
Size	2.92 MiB	3.69 MiB	789.80 KiB

[github-actions]

iOS (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1237.35 ms	1238.75 ms	1.40 ms
Size	2.36 MiB	3.12 MiB	778.55 KiB

[krystofwoldrich]

• Fixed in chore: Moving Replay Integrations to HybridPublic sentry-cocoa#4588

Will be released in a new beta of sentry-cocoa

[krystofwoldrich]

I've bumped cocoa to 8.42.0-beta.2, if CI will be happy we can merge this.