IGAPP-834: Upgrade react-navigation to v6

[jira-to-github-migrator-test[bot]]

Steffen Kleinle - 10.11.2021, 16:08:33

See https://reactnavigation.org/docs/upgrading-from-5.x/#breaking-changes-from-react-native-screensnative-stack

Dependencies to upgrade are:

• @react-navigation/native
• @react-navigation/stack
• react-navigation-header-buttons

Environment: - Linked issues:

• Relates: IGAPP-829