Change stipulated compatibility guarantees.

[fredefox]

Change stipulated compatibility guarantees.

I believe the compatibility table is wrong. Taking what it currently says in the readme at face value e.g. rollbar-2.22.1 would support ruby-3.0.2. Which it doesn't.

Type of change

• Maintenance

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers assigned
• Issue from task tracker has a link to this pull request
• Changes have been reviewed by at least one other engineer

[fredefox]

I'm realising that my fix is not the correct one either. Feel free to treat this as a bug-report that the compatibility table is wrong. My example in the description still holds.