update plugin.json to adapter next release

[peterhashair]

Description:

Issue https://github.com/matomo-org/matomo/issues/19768.

Release version 4.3.0 of the plugin which needs min Matomo 4.12

update plugin.json to adapter next release

Review

• [ ] Functional review done
• [ ] Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• [ ] Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• [ ] Security review done
• [ ] Wording review done
• [ ] Code review done
• [ ] Tests were added if useful/possible
• [ ] Reviewed for breaking changes
• [ ] Developer changelog updated if needed
• [ ] Documentation added if needed
• [ ] Existing documentation updated if needed

[AltamashShaikh]

@peterhashair can we update https://github.com/matomo-org/plugin-DeviceDetectorCache/blob/4.x-dev/CHANGELOG.md also with 4.3.0 change ?