Increment version to 2.19.1.0

Signed-off-by: opensearch-ci-bot <opensearch-infra@amazon.com>

Author: opensearch-ci-bot

package.json

@@ -91,4 +91,4 @@
     "micromatch": "^4.0.8",
     "**/eslint/cross-spawn": "^7.0.5"
   }
-}
+}