Update dependency com.uber.nullaway:nullaway to v0.9.4 (#4559)
Update dependency com.uber.nullaway:nullaway to v0.9.4 (#4559)

Co-authored-by: Renovate Bot <c71e7261d37a4f6ae4cfb0cbd79081310a237e67@renovateapp.com>
dropwizard/dropwizard,dropwizard/dropwizard,dropwizard/dropwizard