[Notification] OpenSearch Dashboards will bump to Node.js 18

[ananzh]

As part of our continued efforts to improve OpenSearch Dashboards, we are planning to upgrade the underlying Node.js version from v14 to v18. This change will enhance performance, add new features, and bolster security. However, such major version changes might also affect the compatibility of existing plugins. Here is more introduction: opensearch-project/OpenSearch-Dashboards#3601.

We will merge the change into main and backport to 2.x. Target release is 2.8.

Therefore, we want to notify the build team asap since Centos 7 doesn't support Node.js 18 and we might need extra research and effort working on it. Here is a testing branch that could be used to build new image:
https://github.com/AMoo-Miki/OpenSearch-Dashboards/tree/node-18-webpack-4

[ananzh]

This is also related to issue #1563

[ananzh]

We will bump to the latest LTS version 18.16.0.

[peterzhuamazon]

Close this as the main issue will be synced to:

• [Proposal] Support AL2023/NodeJS18 for OpenSearch/Dashboards Releases #1563