Onboarding async query core and grammar files to maven snapshots

[peterzhuamazon]

Pending build repo changes on publish-snapshot.sh to support s3 publishing.

• Support s3 bucket in publish-snapshot.sh script opensearch-build#5789

Description

Onboarding async query core and grammar files to maven snapshots

Related Issues

opensearch-project/opensearch-build#5360

Check List

• New functionality includes testing.
• New functionality has been documented.
• New functionality has javadoc added.
• New functionality has a user manual doc added.
• New PPL command checklist all confirmed.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff or -s.
• Public documentation issue/PR created.

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[peterzhuamazon]

• Supporting build PR: Support s3 bucket in publish-snapshot.sh script opensearch-build#5789

[peterzhuamazon]

Hi @penghuo @RyanL1997
Would you please take a look?

Publish examples:

• grammar: https://github.com/opensearch-project/sql/actions/runs/18619934328/job/53089722015
• async: https://github.com/opensearch-project/sql/actions/runs/18619934334/job/53089867044

Thanks!