Update members.yaml for yannuil

[yannuil]

I want to join the Istio org!

• I have reviewed the community membership guidelines
• I have reviewed the contribution guidelines
• I have enabled 2FA on my GitHub account
• I have joined Istio's Slack workspace
• I have written my company name or "Individual", if not affliated with a company, here: Red Hat Inc.
• I have provided a link to at least one PR that I have successfully pushed to one of the Istio repos, here: Add flag to be compliant with attribute handling behavior as in the gateway-api specification  istio#55746

[istio-testing]

Hi @yannuil. Thanks for your PR.

I'm waiting for a istio member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.