[AUTO] Increment version to 2.19.3-SNAPSHOT

[opensearch-trigger-bot]

• Incremented version to 2.19.3-SNAPSHOT.

[noCharger]

blocked on opensearch-project/security#5312

> de.undercouch.gradle.tasks.download.org.apache.hc.client5.http.ClientProtocolException: Not Found (HTTP status code: 404, URL: https://aws.oss.sonatype.org/content/repositories/snapshots/org/opensearch/plugin/opensearch-security/2.19.3.0-SNAPSHOT/maven-metadata.xml)

[noCharger]

blocked on opensearch-project/ml-commons#3830

 [2025-05-06 20:24:20] [autobuild] Execution failed for task ':opensearch:compileJava'.
  [2025-05-06 20:24:20] [autobuild] > Could not resolve all files for configuration ':opensearch:compileClasspath'.
  [2025-05-06 20:24:20] [autobuild]    > Could not resolve org.opensearch:opensearch-ml-client:2.19.3.0-SNAPSHOT.
  [2025-05-06 20:24:20] [autobuild]      Required by:
  [2025-05-06 20:24:20] [autobuild]          project :opensearch
  [2025-05-06 20:24:20] [autobuild]       > Could not resolve org.opensearch:opensearch-ml-client:2.19.3.0-SNAPSHOT.
  [2025-05-06 20:24:20] [autobuild]          > Unable to load Maven meta-data from https://d1nvenhzbhpy0q.cloudfront.net/snapshots/lucene/org/opensearch/opensearch-ml-client/2.19.3.0-SNAPSHOT/maven-metadata.xml.
  [2025-05-06 20:24:20] [autobuild]             > Could not GET 'https://d1nvenhzbhpy0q.cloudfront.net/snapshots/lucene/org/opensearch/opensearch-ml-client/2.19.3.0-SNAPSHOT/maven-metadata.xml'. Received status code 403 from server: Forbidden