[FLINK-39816] Ship parsson into es8 uber jar

[reswqa]

We should ship parsson into uber jar, otherwise es client can not parse reponse(Elasticsearch-Java client relies on it for JSON parsing).

[reswqa]

CI failed as license checker not happy

07:46:12,032 [org.apache.flink.tools.ci.licensecheck.LicenseChecker.main()] ERROR org.apache.flink.tools.ci.licensecheck.JarFileChecker        [] - File '/org/apache/flink/elasticsearch8/shaded/org/eclipse/parsson/messages.properties' in jar '/tmp/flink-validation-deployment/org/apache/flink/flink-sql-connector-elasticsearch8/4.1-SNAPSHOT/flink-sql-connector-elasticsearch8-4.1-20260602.072511-1.jar' contains match with forbidden regex 'gnu ?\R?[\s/#]*general ?\R?[\s/#]*public ?\R?[\s/#]*license'.

[davidradl]

@reswqa You could consider using the connector parent version 2 has has the standard RAT checker in it.

[reswqa]

@davidradl Yes, I have already created [FLINK-39809] Update flink-connector-parent to 2.0 for ElasticSearch connector for the updating.

But as for this PR, the failed checker comes from LicenseChecker in flink-ci-tools, more specifically, it is org.apache.flink.tools.ci.licensecheck.JarFileChecker in flink main repo. I don't understand why upgrading flink-connector-parent would solve the problem. Did I miss something?

[davidradl]

JarFileChecker

No you did not miss anything, just an observation that maybe the RAT checker would have surfaced this issue at build time.

[reswqa]

We fix the upstream in release-2.2 and master branch. So temporarily change this to snapshot binary version.

[reswqa]

This is due to incompatible changes in the upstream([FLINK-17224][table] Support precision of TIME type)