Release: the PR to downstream should point to the next version

On last release 2.4.1, nuxeo-ai-integration has been updated by the bot:

• see https://github.com/nuxeo/nuxeo-ai-integration/pull/8
• nuxeo-ai-integration was already aligned on 2.4.1
• See https://github.com/nuxeo/nuxeo-ai-integration/commit/4cd37a58b7b75d8e5f2c8759b00021a59dcd1df8
• actually, after release, we want it being aligned on the next version: 2.4.2
• some files were not updated: the root POM points to ai-core-parent

Should we do two successive PRs ? A unique PRs with successive commits? ...?

An improvement is needed so that nuxeo-ai-integration is updated about the release, then is running properly against the current version in development.