confluent-kafka-python produce headers could be dict or a list

[owenhaynes]

Environment

Python 3.10
confluent-kafka[avro]==1.9.2
opentelemetry-instrumentation-confluent-kafka==0.34b0

Steps to reproduce
Pass a dict of headers to the producer

What is the expected behavior?
To not crash and handle using a list or a dict for the headers

What is the actual behavior?
crashes because of calling append on a dict of headers in KafkaContextSetter

Additional context
The docs say produce can take a dict or a list https://docs.confluent.io/platform/current/clients/confluent-kafka-python/html/index.html#confluent_kafka.Producer.produce

[avzis]

hi, can you assign this to me?

[alolita]

@srikanthccv @lzchen can you please assign @mrajashree to this issue since there is no PR submission from the current assignee. Thanks!

[srikanthccv]

@avzis let us know if you had already worked on this. I will assign @mrajashree otherwise. @mrajashree can you please a leave a comment here.

[avzis]

I'm not working on it, you can assign this to him

[mrajashree]

thanks, glad to pick it up