Bump com.fasterxml.jackson.core:jackson-databind from 2.14.0 to 2.18.9 in /DataGen - #21

HttpError: Resource not accessible by integration - https://docs.github.com/rest/issues/comments#create-an-issue-comment

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-java@v4, actions/upload-artifact@v4, Madrapps/jacoco-report@v1.7.2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

setup-java v4 is deprecated and will no longer receive updates. Please migrate to actions/setup-java@v5.