chore: bump native runtimes (iOS 6.18.2, Android 11.4.0)

[mfazekas]

Bump native Rive runtimes from iOS 6.15.2 → 6.18.2 and Android 11.2.0 → 11.4.0.

Notable changes in native runtimes:

iOS 6.18.2 (full changelog):

• feat: expose view model name from view model instance
• feat: audio duration API
• feat(vulkan): pre-build draw pipelines
• fix(renderer): gamma correction fix
• fix: path effect shape for inner vector feathering
• fix(runtime): memory leak with listeners on scripted view model properties

iOS 6.18.0 (full changelog):

• feature: component based conditions
• fix: data bound inputs in data converters
• fix: path effect advance
• fix(runtime): interpolation duration zero reset
• feat: Image Fit & Alignment when parented by Layout

Android 11.4.0 (full changelog):

• feature: component based conditions
• feat: single/multiline support in TextInput and improved scrolling
• fix(Vulkan): saturation blend mode on some devices
• fix: data bound inputs in data converters
• fix: path effect advance

[HayesGordon]

LGTM!