Bump better_errors from 2.8.3 to 2.9.0

Bumps [better_errors](https://github.com/BetterErrors/better_errors) from 2.8.3 to 2.9.0.
- [Release notes](https://github.com/BetterErrors/better_errors/releases)
- [Commits](https://github.com/BetterErrors/better_errors/compare/v2.8.3...v2.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
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