Release 1.0.0-beta.6

[buongarzoni]

Description of the change

• Version bump to 1.0.0-beta.6, fixing NPE when Android notifier is not initialized and add tests in CI

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Maintenance
• New release

Related issues

• https://github.com/rollbar/rollbar-react-native/pull/2091

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers assigned
• Issue from task tracker has a link to this pull request
• Changes have been reviewed by at least one other engineer

[brianr]

Notes:

• We'll rename this version to 1.0.0-beta.6
• We think this will fix: Android App Crashes #187, Android error when building with Expo #182, Error java.lang.NoClassDefFoundError in GooglePlay Console #85