Fix release failure after maven central plugin migration

[yue9944882]

This PR adds API after maven release plugin run according to:

https://central.sonatype.org/publish/publish-portal-ossrh-staging-api/#configuring-the-repository

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[yue9944882]

Ref: https://github.com/kubernetes-client/java/issues/4239

[brendandburns]

Looks good, but I'm worried that the current curl call is going to dump our auth info into the CI/CD logs.