wip - fix spec

sentry-ruby/spec/sentry/rack/capture_exceptions_spec.rb

@@ -731,7 +731,7 @@ def will_be_sampled_by_sdk
           expect(profile[:transaction][:id]).to eq(event.event_id)
           expect(profile[:transaction][:name]).to eq(event.transaction)
           expect(profile[:transaction][:trace_id]).to eq(event.contexts[:trace][:trace_id])
-          expect(profile[:transaction][:active_thread_id]).to eq(Thread.current.object_id)
+          expect(profile[:transaction][:active_thread_id]).to eq(Thread.current.object_id.to_s)
 
           # detailed checking of content is done in profiler_spec,
           # just check basic structure here