fix(deps): update dependency react-native-paper to v5.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
react-native-paper (source)	5.5.2 -> 5.6.0

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Release Notes

callstack/react-native-paper

### [`v5.6.0`](https://togithub.com/callstack/react-native-paper/releases/tag/v5.6.0): Release 5.6.0 [Compare Source](https://togithub.com/callstack/react-native-paper/compare/v5.5.2...v5.6.0) ##### Bug Fixes - appbar header ignores border bottom radius ([#​3767](https://togithub.com/callstack/react-native-paper/issues/3767)) ([0a4cfb9](https://togithub.com/callstack/react-native-paper/commit/0a4cfb9db586990edd63b4a9d2261199288e289b)) ##### Features - support flat and elevated mode ([#​3799](https://togithub.com/callstack/react-native-paper/issues/3799)) ([1c16deb](https://togithub.com/callstack/react-native-paper/commit/1c16deb58b15ad26582da1db7f73f93dd84ef070))

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