Change trial length message from 7 days to 14 days

[sergiolms]

Description

This PR only updates the messages displayed in README.md, package.json and the constant in the code so that it shows 14 days instead of 7 days of trial.

Checklist

• I have followed the guidelines in the Contributing document
• My changes follow the coding style of this project
• My changes build without any errors or warnings
• My changes have been formatted and linted
• My changes include any required corresponding changes to the documentation (including CHANGELOG.md and README.md)
• My changes have been rebased and squashed to the minimal number (typically 1) of relevant commits
• My changes have a descriptive commit message with a short title, including a Fixes $XXX - or Closes #XXX - prefix to auto-close the issue that your PR addresses

[sergiolms]

Solved in #3694