[AUTO] Increment version to 2.19.6.0

[opensearch-ci-bot]

• Incremented version to 2.19.6.0.

[github-actions]

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🧪 No relevant tests

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[github-actions]

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Category	Suggestion	Impact
General	Restore trailing newline at file end The file no longer ends with a trailing newline. Most tooling (including linters, git, and POSIX standards) expects text files, especially package.json, to end with a newline character. Restore the trailing newline to avoid formatting issues. package.json [96] +} - Suggestion importance[1-10]: 6 __ Why: The suggestion correctly identifies that the trailing newline was removed from package.json, which is a minor but valid formatting concern per POSIX standards and common tooling expectations.	Low