chore: migrate Example app & e2e tests to RN 0.72.4 (#1880)

## Description

Migrate `Example` and e2e tests to the latest RN.
For some reason (I believe due to the presence and usage of v4) this app
was left behind with RN versions.

I did leave some `@react-navigation` components on v5 versions
(`bottom-tabs`, `drawer`, etc., because using more recent versions
caused e2e tests to fail), I'll try to upgrade these in separate PR.

## Changes

* Migrated `Example` app to `0.72.4`
* Bumped most of the dependencies to recent versions (also some of the
natives)
* Fixed detox configuration


## Test code and steps to reproduce

Build `Example` & check that it works + CI passes

## Checklist

- [ ] Ensured that CI passes

Example/.eslintrc.js

@@ -0,0 +1,4 @@
+module.export = {
+  root: true,
+  extends: '@react-native',
+};

Example/.gitignore

@@ -30,18 +30,16 @@ build/
 local.properties
 *.iml
 *.hprof
+.cxx/
+*.keystore
+!debug.keystore
 
 # node.js
 #
 node_modules/
 npm-debug.log
 yarn-error.log
 
-# BUCK
-buck-out/
-\.buckd/
-*.keystore
-
 # fastlane
 #
 # It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
@@ -61,6 +59,12 @@ buck-out/
 /ios/Pods/
 /vendor/bundle/
 
+# Temporary files created by Metro to check the health of the file watcher
+.metro-health-check*
+
+# testing
+/coverage
+
 # Android cpatures
 /android/captures
 

Example/Gemfile

@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 # You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
-ruby '2.7.5'
-gem 'cocoapods', '~> 1.11', '>= 1.11.2'
+ruby '>= 2.6.10'
+gem 'cocoapods', '~> 1.12'