fix: handle Ruby exception backtraces with stripped newlines
gitlab-logger strips blank lines, but gitlab-fluent-plugin-detect-exceptions previously expected newlines to delimit different parts of a Ruby stack trace.
0.0.16 updated the parser to handle missing newlines: gitlab-org/ruby/gems/gitlab-fluent-plugin-detect-exceptions!3 (merged)
Relates to gitlab-com/gl-infra/k8s-workloads/tanka-deployments#2 (closed)