Add ci.opensearch.org/m2/ mirror for plugin resolution (sql)

[shreyah963]

Description

Add ci.opensearch.org/m2/ mirror for plugin resolution (sql)

Issues Resolved

opensearch-project/opensearch-build#6278 (comment)

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[github-actions]

PR Code Analyzer ❗

AI-powered 'Code-Diff-Analyzer' found issues on commit 7f6183e.

Path	Line	Severity	Description
settings.gradle	8	high	New Maven repository URL added to pluginManagement: 'https://ci.opensearch.org/m2/'. Per mandatory policy, any addition of a package registry source must be flagged regardless of apparent legitimacy. While the domain matches the existing 'ci.opensearch.org/maven2/' entry, maintainers should verify this path serves the expected artifacts and has not been introduced to shadow legitimate plugins with malicious ones.

The table above displays the top 10 most important findings.

Total: 1 | Critical: 0 | High: 1 | Medium: 0 | Low: 0

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