Update maven2 mirror repository url order

[peterzhuamazon]

Description

Update maven2 mirror repository url order

Issues Resolved

opensearch-project/opensearch-build#6278

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[github-actions]

PR Code Analyzer ❗

AI-powered 'Code-Diff-Analyzer' found issues on commit 4b566da.

Path	Line	Severity	Description
bwc-test/build.gradle	53	high	Repository resolution order changed in buildscript block: 'https://ci.opensearch.org/ci/dbc/snapshots/maven/' moved to after mavenCentral(). Per mandatory rule, all package registry/repository configuration changes must be flagged. The reordering changes which repository is queried first for artifact resolution, which can affect which artifact version is ultimately downloaded. Maintainers should verify this reordering is intentional and that no artifacts will now resolve differently.
bwc-test/build.gradle	66	high	Repository resolution order changed in main repositories block: 'https://ci.opensearch.org/ci/dbc/snapshots/maven/' moved to after mavenCentral(). Per mandatory rule, all package registry/repository configuration changes must be flagged. Same concern as the buildscript block — dependency resolution precedence is altered, and maintainers must verify no artifacts will resolve to unexpected versions as a result.

The table above displays the top 10 most important findings.

Total: 2 | Critical: 0 | High: 2 | Medium: 0 | Low: 0

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