[receiver/pulsar] Update codeowners

[atoulme]

Component(s)

receiver/pulsar

Describe the issue you're reporting

Please see #20868 for context.

The pulsarreceiver is lucky to count @tjiuming as codeowner, however they are not currently registered as a member of OpenTelemetry.

Please work towards a resolution:

• Work with @tjiuming towards their OpenTelemetry membership, following steps detailed in Ensure that all codeowners are members of the OpenTelemetry organization #20868.
• Open a PR to remove @tjiuming from codeowners. They should review and approve the change.

If no action is taken by January 2024, I will open a PR to remove them from the codeowners, and after a delay for their review, eventually will merge the PR.

[github-actions]

Pinging code owners:

• receiver/pulsar: @dmitryax @tjiuming

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[tjiuming]

@atoulme You can update the codeowner to @dao-jun , it's my another github account, and joined OTEL as a member.

[atoulme]

I am sorry, I cannot do this on your behalf. Please open a PR to update the codeowners @tjiuming @dao-jun

[dao-jun]

OK，I'll do it