Offer "Show release notes" button after CodeQL CLI has been updated

[Marcono1234]

Is your feature request related to a problem? Please describe.
Currently after a CodeQL CLI update succeeded the dialog just has a "Show log" button. However, the log does not contain much interesting information (?).
Instead it might be more interesting for the user to be informed about the changes and new features.

Describe the solution you'd like
What about displaying a "Show release notes" button instead which opens the CodeQL CLI CHANGELOG.md file, or the GitHub releases page?

Describe alternatives you've considered

• Add the "Show release notes" button in addition to the "Show log" button
• Keep the current behavior, don't change anything